Auto merge of #16609 - nox:quirks, r=Manishearth,emilio

Implement unitless length quirk

The Gecko side doesn't propagate its quirks mode yet.

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tests/unit/style/parsing/image.rs

@@ -5,6 +5,7 @@
 use euclid::size::TypedSize2D;
 use parsing::parse;
 use std::f32::consts::PI;
+use style::context::QuirksMode;
 use style::font_metrics::ServoMetricsProvider;
 use style::media_queries::{Device, MediaType};
 use style::properties::ComputedValues;
@@ -51,6 +52,7 @@ fn test_linear_gradient() {
         style: initial_style.clone(),
         font_metrics_provider: &ServoMetricsProvider,
         in_media_query: false,
+        quirks_mode: QuirksMode::NoQuirks,
     };
     assert_eq!(specified::AngleOrCorner::None.to_computed_value(&specified_context),
                computed::AngleOrCorner::Angle(Angle::from_radians(PI)));

tests/unit/style/parsing/length.rs

@@ -5,6 +5,7 @@
 use cssparser::Parser;
 use media_queries::CSSErrorReporterTest;
 use parsing::parse;
+use style::context::QuirksMode;
 use style::parser::{LengthParsingMode, Parse, ParserContext};
 use style::stylesheets::{CssRuleType, Origin};
 use style::values::specified::length::{AbsoluteLength, Length, NoCalcLength};
@@ -38,7 +39,8 @@ fn test_length_parsing_modes() {
     let url = ::servo_url::ServoUrl::parse("http://localhost").unwrap();
     let reporter = CSSErrorReporterTest;
     let context = ParserContext::new(Origin::Author, &url, &reporter,
-                                     Some(CssRuleType::Style), LengthParsingMode::SVG);
+                                     Some(CssRuleType::Style), LengthParsingMode::SVG,
+                                     QuirksMode::NoQuirks);
     let mut parser = Parser::new("1");
     let result = Length::parse(&context, &mut parser);
     assert!(result.is_ok());

tests/unit/style/parsing/mod.rs

@@ -6,6 +6,7 @@
 
 use cssparser::Parser;
 use media_queries::CSSErrorReporterTest;
+use style::context::QuirksMode;
 use style::parser::{LengthParsingMode, ParserContext};
 use style::stylesheets::{CssRuleType, Origin};
 
@@ -13,7 +14,8 @@ fn parse<T, F: Fn(&ParserContext, &mut Parser) -> Result<T, ()>>(f: F, s: &str)
     let url = ::servo_url::ServoUrl::parse("http://localhost").unwrap();
     let reporter = CSSErrorReporterTest;
     let context = ParserContext::new(Origin::Author, &url, &reporter, Some(CssRuleType::Style),
-                                     LengthParsingMode::Default);
+                                     LengthParsingMode::Default,
+                                     QuirksMode::NoQuirks);
     let mut parser = Parser::new(s);
     f(&context, &mut parser)
 }