Revert "Upgrade WebRender to e491e1ae637b2eed1e7195855d88357e5eb3ddf9 (#30323)"revert-webrender

This reverts commit a9d37cb85ac2c55fc630fccffe1ba60ff00f555b.

1 files changed, 0 insertions, 18 deletions

diff --git a/third_party/webrender/webrender_build/src/shader.rs b/third_party/webrender/webrender_build/src/shader.rs
index 331e858bdac..3c15f4f4148 100644
--- a/third_party/webrender/webrender_build/src/shader.rs
+++ b/third_party/webrender/webrender_build/src/shader.rs
@@ -170,7 +170,6 @@ pub fn build_shader_prefix_string<F: FnMut(&str)>(
     // GLSL requires that the version number comes first.
     let gl_version_string = match gl_version {
         ShaderVersion::Gl => "#version 150\n",
-        ShaderVersion::Gles if features.contains(&"TEXTURE_EXTERNAL_ESSL1") => "#version 100\n",
         ShaderVersion::Gles => "#version 300 es\n",
     };
     output(gl_version_string);
@@ -194,23 +193,6 @@ pub fn build_shader_prefix_string<F: FnMut(&str)>(
     };
     output(kind_string);
 
-    // detect which platform we're targeting
-    let is_macos = match std::env::var("CARGO_CFG_TARGET_OS") {
-        Ok(os) => os == "macos",
-        // if this is not called from build.rs (e.g. the gpu_cache_update shader or
-        // if the optimized shader pref is disabled) we want to use the runtime value
-        Err(_) => cfg!(target_os = "macos"),
-    };
-    let is_android = match std::env::var("CARGO_CFG_TARGET_OS") {
-        Ok(os) => os == "android",
-        Err(_) => cfg!(target_os = "android"),
-    };
-    if is_macos {
-        output("#define PLATFORM_MACOS\n");
-    } else if is_android {
-        output("#define PLATFORM_ANDROID\n");
-    }
-
     // Define a constant for the vertex texture width.
     output("#define WR_MAX_VERTEX_TEXTURE_WIDTH ");
     output(&MAX_VERTEX_TEXTURE_WIDTH_STRING);