Move consumeColor and consumePosition to CSSPropertyParserHelpers

This patch moves the routines for consuming <color> and <position> out
of CSSPropertyParser.cpp and into CSSPropertyParserHelpers. We expect
that we'll require these routines for various Houdini APIs.

BUG=499780

Review URL: https://codereview.chromium.org/1802673003

Cr-Commit-Position: refs/heads/master@{#381865}

third_party/WebKit/Source/core/animation/CSSColorInterpolationType.cpp

@@ -5,6 +5,7 @@
 #include "core/animation/CSSColorInterpolationType.h"
 
 #include "core/animation/ColorPropertyFunctions.h"
+#include "core/css/CSSColorValue.h"
 #include "core/css/parser/CSSPropertyParser.h"
 #include "core/css/resolver/StyleResolverState.h"
 #include "core/layout/LayoutTheme.h"

third_party/WebKit/Source/core/css/parser/CSSPropertyParser.h

@@ -23,7 +23,6 @@
 #ifndef CSSPropertyParser_h
 #define CSSPropertyParser_h
 
-#include "core/css/CSSColorValue.h"
 #include "core/css/CSSGridTemplateAreasValue.h"
 #include "core/css/StyleRule.h"
 #include "core/css/parser/CSSParserTokenRange.h"
@@ -74,6 +73,7 @@ public:
     // Parses a non-shorthand CSS property
     static PassRefPtrWillBeRawPtr<CSSValue> parseSingleValue(CSSPropertyID, const CSSParserTokenRange&, const CSSParserContext&);
 
+    // TODO(timloh): This doesn't seem like the right place for these
     static bool isSystemColor(CSSValueID);
     static bool isColorKeyword(CSSValueID);
     static bool isValidNumericValue(double);

third_party/WebKit/Source/core/css/parser/CSSPropertyParserHelpers.h

@@ -14,6 +14,7 @@
 namespace blink {
 
 class CSSStringValue;
+class CSSValuePair;
 
 // When these functions are successful, they will consume all the relevant
 // tokens from the range and also consume any whitespace which follows. When
@@ -51,7 +52,13 @@ PassRefPtrWillBeRawPtr<CSSCustomIdentValue> consumeCustomIdent(CSSParserTokenRan
 PassRefPtrWillBeRawPtr<CSSStringValue> consumeString(CSSParserTokenRange&);
 String consumeUrl(CSSParserTokenRange&);
 
-// TODO(timloh): Move across consumeColor, consumeImage and consumePosition
+PassRefPtrWillBeRawPtr<CSSValue> consumeColor(CSSParserTokenRange&, CSSParserMode, bool acceptQuirkyColors = false);
+
+PassRefPtrWillBeRawPtr<CSSValuePair> consumePosition(CSSParserTokenRange&, CSSParserMode, UnitlessQuirk);
+bool consumePosition(CSSParserTokenRange&, CSSParserMode, UnitlessQuirk, RefPtrWillBeRawPtr<CSSValue>& resultX, RefPtrWillBeRawPtr<CSSValue>& resultY);
+bool consumeOneOrTwoValuedPosition(CSSParserTokenRange&, CSSParserMode, UnitlessQuirk, RefPtrWillBeRawPtr<CSSValue>& resultX, RefPtrWillBeRawPtr<CSSValue>& resultY);
+
+// TODO(timloh): Move across consumeImage
 
 // Template implementations are at the bottom of the file for readability.