Split CSSPrimitiveValue into CSSPrimitiveValue and CSSIdentifierValue

third_party/WebKit/Source/core/css/CSSValue.h

Index: third_party/WebKit/Source/core/css/CSSValue.h
diff --git a/third_party/WebKit/Source/core/css/CSSValue.h b/third_party/WebKit/Source/core/css/CSSValue.h
index e2346ca3359c0359a6a32a03bd586004b15b3923..781c73feb2a910150f29b197b680758d3cf31385 100644
--- a/third_party/WebKit/Source/core/css/CSSValue.h
+++ b/third_party/WebKit/Source/core/css/CSSValue.h
@@ -27,6 +27,8 @@
 
 namespace blink {
 
+class Length;
+
 class CORE_EXPORT CSSValue : public GarbageCollectedFinalized<CSSValue> {
 public:
     // Override operator new to allocate CSSValue subtype objects onto
@@ -43,9 +45,13 @@ public:
         return ThreadHeap::allocateOnArenaIndex(state, size, isEager ? BlinkGC::EagerSweepArenaIndex : BlinkGC::CSSValueArenaIndex, GCInfoTrait<CSSValue>::index(), typeName);
     }
 
+    // TODO(sashab): Remove this method and move logic to the caller.
+    static CSSValue* create(const Length& value, float zoom);
+
     String cssText() const;
 
     bool isPrimitiveValue() const { return m_classType == PrimitiveClass; }
+    bool isIdentifierValue() const { return m_classType == IdentifierClass; }
     bool isValuePair() const { return m_classType == ValuePairClass; }
     bool isValueList() const { return m_classType >= ValueListClass; }
 
@@ -114,6 +120,7 @@ protected:
     static const size_t ClassTypeBits = 6;
     enum ClassType {
         PrimitiveClass,
+        IdentifierClass,
         ColorClass,
         CounterClass,
         QuadClass,