Implemented parsing logic in simple single property APIs

This patch
- Implemented the parsing logic for the single property APIs for the
  following properties
  - offset-distance
  - offset-rotate
  - -webkit-box-flex
  - -webkit-border-image
- Removed the legacy parsing logic for these properties from
  CSSPropertyParser.cpp
- updated CSSProperties.json5 so that the generated header files for
  the property APIs are updated

diff for generated files:
https://gist.github.com/BugsNash/8844b947b4e7e165b7475684b04da92c/revisions

Bug: 668012
Change-Id: I144a82c9ba6727af9387a59a6d57427fd223327b
Reviewed-on: https://chromium-review.googlesource.com/578757Reviewed-by: Renée Wright <rjwright@chromium.org>
Commit-Queue: Bugs Nash <bugsnash@chromium.org>
Cr-Commit-Position: refs/heads/master@{#488594}

third_party/WebKit/Source/core/css/CSSProperties.json5

@@ -1797,6 +1797,7 @@
     {
       name: "offset-distance",
       api_class: true,
+      api_methods: ["parseSingleValue"],
       converter: "ConvertLength",
       interpolable: true,
       field_template: "<length>",
@@ -1831,6 +1832,7 @@
     {
       name: "offset-rotate",
       api_class: "CSSPropertyAPIOffsetRotate",
+      api_methods: ["parseSingleValue"],
       converter: "ConvertOffsetRotate",
       interpolable: true,
       field_template: "external",
@@ -2855,6 +2857,7 @@
     {
       name: "-webkit-border-image",
       api_class: true,
+      api_methods: ["parseSingleValue"],
       custom_value: true,
     },
     {
@@ -2898,6 +2901,7 @@
     {
       name: "-webkit-box-flex",
       api_class: true,
+      api_methods: ["parseSingleValue"],
       type_name: "float",
       field_template: "primitive",
       default_value: "0.0f",

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

@@ -42,7 +42,6 @@
 #include "core/css/properties/CSSPropertyFontUtils.h"
 #include "core/css/properties/CSSPropertyLengthUtils.h"
 #include "core/css/properties/CSSPropertyMarginUtils.h"
-#include "core/css/properties/CSSPropertyOffsetRotateUtils.h"
 #include "core/css/properties/CSSPropertyPositionUtils.h"
 #include "core/css/properties/CSSPropertyTextDecorationLineUtils.h"
 #include "core/css/properties/CSSPropertyTransitionPropertyUtils.h"
@@ -999,11 +998,6 @@ const CSSValue* CSSPropertyParser::ParseSingleValue(
       DCHECK(!RuntimeEnabledFeatures::CSS3TextDecorationsEnabled());
       return CSSPropertyTextDecorationLineUtils::ConsumeTextDecorationLine(
           range_);
-    case CSSPropertyOffsetDistance:
-      return ConsumeLengthOrPercent(range_, context_->Mode(), kValueRangeAll);
-    case CSSPropertyOffsetRotate:
-      return CSSPropertyOffsetRotateUtils::ConsumeOffsetRotate(range_,
-                                                               *context_);
     case CSSPropertyWebkitTransformOriginX:
     case CSSPropertyWebkitPerspectiveOriginX:
       return CSSPropertyPositionUtils::ConsumePositionLonghand<CSSValueLeft,
@@ -1014,8 +1008,6 @@ const CSSValue* CSSPropertyParser::ParseSingleValue(
       return CSSPropertyPositionUtils::ConsumePositionLonghand<CSSValueTop,
                                                                CSSValueBottom>(
           range_, context_->Mode());
-    case CSSPropertyWebkitBoxFlex:
-      return ConsumeNumber(range_, kValueRangeAll);
     case CSSPropertyStrokeWidth:
     case CSSPropertyStrokeDashoffset:
     case CSSPropertyCx:
@@ -1038,9 +1030,6 @@ const CSSValue* CSSPropertyParser::ParseSingleValue(
     case CSSPropertyBorderImageWidth:
     case CSSPropertyWebkitMaskBoxImageWidth:
       return CSSPropertyBorderImageUtils::ConsumeBorderImageWidth(range_);
-    case CSSPropertyWebkitBorderImage:
-      return CSSPropertyBorderImageUtils::ConsumeWebkitBorderImage(range_,
-                                                                   context_);
     case CSSPropertyBackgroundAttachment:
     case CSSPropertyBackgroundBlendMode:
     case CSSPropertyBackgroundClip:

third_party/WebKit/Source/core/css/properties/CSSPropertyAPIOffsetDistance.cpp

@@ -4,4 +4,18 @@
 
 #include "core/css/properties/CSSPropertyAPIOffsetDistance.h"
 
-namespace blink {}  // namespace blink
+#include "core/css/parser/CSSParserContext.h"
+#include "core/css/parser/CSSPropertyParserHelpers.h"
+#include "platform/Length.h"
+
+namespace blink {
+
+const CSSValue* CSSPropertyAPIOffsetDistance::parseSingleValue(
+    CSSParserTokenRange& range,
+    const CSSParserContext& context,
+    const CSSParserLocalContext&) {
+  return CSSPropertyParserHelpers::ConsumeLengthOrPercent(range, context.Mode(),
+                                                          kValueRangeAll);
+}
+
+}  // namespace blink

third_party/WebKit/Source/core/css/properties/CSSPropertyAPIOffsetRotate.cpp

@@ -4,4 +4,15 @@
 
 #include "core/css/properties/CSSPropertyAPIOffsetRotate.h"
 
-namespace blink {}  // namespace blink
+#include "core/css/properties/CSSPropertyOffsetRotateUtils.h"
+
+namespace blink {
+
+const CSSValue* CSSPropertyAPIOffsetRotate::parseSingleValue(
+    CSSParserTokenRange& range,
+    const CSSParserContext& context,
+    const CSSParserLocalContext&) {
+  return CSSPropertyOffsetRotateUtils::ConsumeOffsetRotate(range, context);
+}
+
+}  // namespace blink

third_party/WebKit/Source/core/css/properties/CSSPropertyAPIWebkitBorderImage.cpp

@@ -4,4 +4,15 @@
 
 #include "core/css/properties/CSSPropertyAPIWebkitBorderImage.h"
 
-namespace blink {}  // namespace blink
+#include "core/css/properties/CSSPropertyBorderImageUtils.h"
+
+namespace blink {
+
+const CSSValue* CSSPropertyAPIWebkitBorderImage::parseSingleValue(
+    CSSParserTokenRange& range,
+    const CSSParserContext& context,
+    const CSSParserLocalContext&) {
+  return CSSPropertyBorderImageUtils::ConsumeWebkitBorderImage(range, &context);
+}
+
+}  // namespace blink

third_party/WebKit/Source/core/css/properties/CSSPropertyAPIWebkitBoxFlex.cpp

@@ -4,4 +4,15 @@
 
 #include "core/css/properties/CSSPropertyAPIWebkitBoxFlex.h"
 
-namespace blink {}  // namespace blink
+#include "core/css/parser/CSSPropertyParserHelpers.h"
+
+namespace blink {
+
+const CSSValue* CSSPropertyAPIWebkitBoxFlex::parseSingleValue(
+    CSSParserTokenRange& range,
+    const CSSParserContext&,
+    const CSSParserLocalContext&) {
+  return CSSPropertyParserHelpers::ConsumeNumber(range, kValueRangeAll);
+}
+
+}  // namespace blink