Auto merge of #18973 - MortimerGoro:offscreen_v12, r=jdm

Update offscreen_gl_context to v0.12

<!-- Please describe your changes on the following line: -->

Update offscreen_gl_context to v0.12. Includes:

- Support for OpenGL version selection. It's required for WebGL 2.
- Support for iOS EAGLContext. WebGL should work out of the box once Servo is fully built on iOS.

---
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- [x] `./mach build -d` does not report any errors
- [ ] `./mach test-tidy` does not report any errors
- [ ] These changes fix #__ (github issue number if applicable).

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- [x] There are tests for these changes OR
- [ ] These changes do not require tests because _____

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1 files changed, 19 insertions, 18 deletions

diff --git a/Cargo.lock b/Cargo.lock
index a0a76f93391..21db3bc227d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -311,11 +311,11 @@ dependencies = [
  "cssparser 0.22.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.15.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "gleam 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gleam 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.1.37 (registry+https://github.com/rust-lang/crates.io-index)",
- "offscreen_gl_context 0.11.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "offscreen_gl_context 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "servo_config 0.0.1",
  "webrender 0.52.1 (git+https://github.com/servo/webrender)",
  "webrender_api 0.52.1 (git+https://github.com/servo/webrender)",
@@ -332,7 +332,7 @@ dependencies = [
  "malloc_size_of 0.0.1",
  "malloc_size_of_derive 0.0.1",
  "nonzero 0.0.1",
- "offscreen_gl_context 0.11.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "offscreen_gl_context 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "servo_config 0.0.1",
  "webrender_api 0.52.1 (git+https://github.com/servo/webrender)",
@@ -370,7 +370,7 @@ name = "cgl"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "gleam 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gleam 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -477,7 +477,7 @@ version = "0.0.1"
 dependencies = [
  "euclid 0.15.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "gfx_traits 0.0.1",
- "gleam 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gleam 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "image 0.16.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -790,7 +790,7 @@ dependencies = [
  "compositing 0.0.1",
  "devtools 0.0.1",
  "euclid 0.15.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "gleam 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gleam 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "glutin_app 0.0.1",
  "libc 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
  "libservo 0.0.1",
@@ -1174,7 +1174,7 @@ dependencies = [
 
 [[package]]
 name = "gleam"
-version = "0.4.8"
+version = "0.4.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "gl_generator 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1194,7 +1194,7 @@ dependencies = [
  "compositing 0.0.1",
  "euclid 0.15.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "gdi32-sys 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gleam 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gleam 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "libservo 0.0.1",
  "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "msg 0.0.1",
@@ -1403,7 +1403,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cgl 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "core-foundation 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "gleam 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gleam 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "leaky-cow 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1684,7 +1684,7 @@ dependencies = [
  "euclid 0.15.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "gaol 0.0.1 (git+https://github.com/servo/gaol)",
  "gfx 0.0.1",
- "gleam 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gleam 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "layout_thread 0.0.1",
  "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2158,7 +2158,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "offscreen_gl_context"
-version = "0.11.2"
+version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cgl 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2166,11 +2166,12 @@ dependencies = [
  "euclid 0.15.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "gdi32-sys 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "gl_generator 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "gleam 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gleam 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "libloading 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "objc 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "osmesa-sys 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "user32-sys 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2618,7 +2619,7 @@ dependencies = [
  "encoding 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.15.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "gleam 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gleam 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "half 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "html5ever 0.21.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.10.13 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2640,7 +2641,7 @@ dependencies = [
  "net_traits 0.0.1",
  "nonzero 0.0.1",
  "num-traits 0.1.37 (registry+https://github.com/rust-lang/crates.io-index)",
- "offscreen_gl_context 0.11.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "offscreen_gl_context 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "open 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "phf 0.7.21 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2921,7 +2922,7 @@ dependencies = [
  "cmake 0.1.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.15.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "expat-sys 2.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "gleam 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gleam 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "glx 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "io-surface 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3634,7 +3635,7 @@ dependencies = [
  "freetype 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "fxhash 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "gamma-lut 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "gleam 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gleam 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.1.37 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3884,7 +3885,7 @@ dependencies = [
 "checksum getopts 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)" = "d9047cfbd08a437050b363d35ef160452c5fe8ea5187ae0a624708c91581d685"
 "checksum gif 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)" = "8a80d6fe9e52f637df9afd4779449a7be17c39cc9c35b01589bb833f956ba596"
 "checksum gl_generator 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "0940975a4ca12b088d32b5d5134826c47d2e73de4b0b459b05244c01503eccbb"
-"checksum gleam 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)" = "bf887141f0c2a83eae026cbf3fba74f0a5cb0f01d20e5cdfcd8c4ad39295be1e"
+"checksum gleam 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "d808f1f9f6a460139aae0f8809d38583fa1dac905255c9fe2c75893c579f5f6f"
 "checksum glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "8be18de09a56b60ed0edf84bc9df007e30040691af7acd1c41874faac5895bfb"
 "checksum glx 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "b280007fa9c7442cfd1e0b1addb8d1a59240267110e8705f8f7e2c7bfb7e2f72"
 "checksum gvr-sys 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e84ba5e13cd925de87b669475525f956f8e936e67ddb24fbb1a077d96bbe174c"
@@ -3954,7 +3955,7 @@ dependencies = [
 "checksum objc-foundation 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "1add1b659e36c9607c7aab864a76c7a4c2760cd0cd2e120f3fb8b952c7e22bf9"
 "checksum objc_id 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e4730aa1c64d722db45f7ccc4113a3e2c465d018de6db4d3e7dfe031e8c8a297"
 "checksum odds 0.2.25 (registry+https://github.com/rust-lang/crates.io-index)" = "c3df9b730298cea3a1c3faa90b7e2f9df3a9c400d0936d6015e6165734eefcba"
-"checksum offscreen_gl_context 0.11.2 (registry+https://github.com/rust-lang/crates.io-index)" = "ee0b17158af8e1fb6c8f8df048bd3f1c4b78bebbf4883f189e2a83ce853ce9bd"
+"checksum offscreen_gl_context 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2211cc1c0513c664d64f1e2a15d9d7ded52a90f115946e3b2acc7a651d8404f9"
 "checksum ogg 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7137bf02687385302f4c0aecd77cfce052b69f5b4ee937be778e125c62f67e30"
 "checksum ogg_metadata 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "fc665717454399cba557c55ad226148996e9266ee291f8a37a98bb2cded0a490"
 "checksum open 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3478ed1686bd1300c8a981a940abc92b06fac9cbef747f4c668d4e032ff7b842"