Remove unused code for parsing a `sizes` attribute.

We have `SourceSizeList` in
components/style/values/specified/source_size_list.rs which does the job and is
tested via WPT in Gecko.

1 files changed, 0 insertions, 70 deletions

diff --git a/components/script/dom/htmlimageelement.rs b/components/script/dom/htmlimageelement.rs
index 61acecda71d..b37199ca0db 100644
--- a/components/script/dom/htmlimageelement.rs
+++ b/components/script/dom/htmlimageelement.rs
@@ -3,7 +3,6 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 use app_units::{Au, AU_PER_PX};
-use cssparser::{Parser, ParserInput};
 use document_loader::{LoadType, LoadBlocker};
 use dom::activation::Activatable;
 use dom::attr::Attr;
@@ -58,13 +57,7 @@ use std::default::Default;
 use std::i32;
 use std::sync::{Arc, Mutex};
 use style::attr::{AttrValue, LengthOrPercentageOrAuto, parse_double, parse_unsigned_integer};
-use style::context::QuirksMode;
-use style::media_queries::MediaQuery;
-use style::parser::ParserContext;
 use style::str::is_ascii_digit;
-use style::values::specified::{Length, ViewportPercentageLength};
-use style::values::specified::length::NoCalcLength;
-use style_traits::ParsingMode;
 use task_source::TaskSource;
 
 enum ParseState {
@@ -94,12 +87,6 @@ enum State {
     Broken,
 }
 
-#[derive(Debug, PartialEq)]
-pub struct Size {
-    pub query: Option<MediaQuery>,
-    pub length: Length,
-}
-
 #[derive(Clone, Copy, JSTraceable, MallocSizeOf)]
 enum ImageRequestPhase {
     Pending,
@@ -758,63 +745,6 @@ impl LayoutHTMLImageElementHelpers for LayoutDom<HTMLImageElement> {
     }
 }
 
-//https://html.spec.whatwg.org/multipage/#parse-a-sizes-attribute
-pub fn parse_a_sizes_attribute(input: DOMString, width: Option<u32>) -> Vec<Size> {
-    let mut sizes = Vec::<Size>::new();
-    for unparsed_size in input.split(',') {
-        let whitespace = unparsed_size.chars().rev().take_while(|c| char::is_whitespace(*c)).count();
-        let trimmed: String = unparsed_size.chars().take(unparsed_size.chars().count() - whitespace).collect();
-
-        if trimmed.is_empty() {
-            continue;
-        }
-        let mut input = ParserInput::new(&trimmed);
-        let url = ServoUrl::parse("about:blank").unwrap();
-        let context = ParserContext::new_for_cssom(
-            &url,
-            None,
-            ParsingMode::empty(),
-            QuirksMode::NoQuirks,
-            None,
-        );
-        let mut parser = Parser::new(&mut input);
-        let length = parser.try(|i| Length::parse_non_negative(&context, i));
-        match length {
-            Ok(len) => sizes.push(Size {
-                length: len,
-                query: None
-            }),
-            Err(_) => {
-                let mut media_query_parser = parser;
-                let media_query = media_query_parser.try(|i| MediaQuery::parse(&context, i));
-                if let Ok(query) = media_query {
-                    let length = Length::parse_non_negative(&context, &mut media_query_parser);
-                        if let Ok(length) = length {
-                            sizes.push(Size {
-                                length: length,
-                                query: Some(query)
-                        })
-                    }
-                }
-            },
-        }
-    }
-    if sizes.is_empty() {
-        let size = match width {
-            Some(w) => Size {
-                length: Length::from_px(w as f32),
-                query: None
-            },
-            None => Size {
-                length: Length::NoCalc(NoCalcLength::ViewportPercentage(ViewportPercentageLength::Vw(100.))),
-                query: None
-            },
-        };
-        sizes.push(size);
-    }
-    sizes
-}
-
 impl HTMLImageElementMethods for HTMLImageElement {
     // https://html.spec.whatwg.org/multipage/#dom-img-alt
     make_getter!(Alt, "alt");