[Experimental] Implement some part of custom properties in style maps

third_party/WebKit/Source/core/css/cssom/StylePropertyMap.cpp

 // Copyright 2016 the chromium authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/css/cssom/StylePropertyMap.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/css/CSSValueList.h"
 #include "core/css/cssom/CSSSimpleLength.h"
 #include "core/css/cssom/CSSStyleValue.h"
@@ skipping 50 matching lines @@
   CSSStyleValueVector styleVector = getAllInternal(propertyID);
   if (styleVector.isEmpty())
     return nullptr;
 
   return styleVector[0];
 }
 
 CSSStyleValueVector StylePropertyMap::getAll(const String& propertyName,
                                              ExceptionState& exceptionState) {
   CSSPropertyID propertyID = cssPropertyID(propertyName);
-  if (propertyID != CSSPropertyInvalid && propertyID != CSSPropertyVariable)
-    return getAllInternal(propertyID);
+  if (propertyID == CSSPropertyInvalid) {
+    exceptionState.throwTypeError("Invalid propertyName: " + propertyName);
+    return CSSStyleValueVector();
+  }
 
-  // TODO(meade): Handle custom properties here.
-  exceptionState.throwTypeError("Invalid propertyName: " + propertyName);
-  return CSSStyleValueVector();
+  if (propertyID == CSSPropertyVariable)
+    return getAllInternal(propertyName);
+
+  return getAllInternal(propertyID);
 }
 
 bool StylePropertyMap::has(const String& propertyName,
                            ExceptionState& exceptionState) {
   CSSPropertyID propertyID = cssPropertyID(propertyName);
   if (propertyID != CSSPropertyInvalid && propertyID != CSSPropertyVariable)
     return !getAllInternal(propertyID).isEmpty();
 
   // TODO(meade): Handle custom properties here.
   exceptionState.throwTypeError("Invalid propertyName: " + propertyName);
@@ skipping 36 matching lines @@
   exceptionState.throwTypeError("Invalid propertyName: " + propertyName);
 }
 
 StylePropertyMap::IterationSource* StylePropertyMap::startIteration(
     ScriptState*,
     ExceptionState&) {
   return new StylePropertyMapIterationSource(getIterationEntries());
 }
 
 }  // namespace blink