[CSS Typed OM] Rearrange StylePropertyMap classes to match the new spec.

third_party/WebKit/Source/core/css/cssom/StylePropertyMapReadonly.h

Index: third_party/WebKit/Source/core/css/cssom/StylePropertyMapReadonly.h
diff --git a/third_party/WebKit/Source/core/css/cssom/StylePropertyMap.h b/third_party/WebKit/Source/core/css/cssom/StylePropertyMapReadonly.h
similarity index 59%
copy from third_party/WebKit/Source/core/css/cssom/StylePropertyMap.h
copy to third_party/WebKit/Source/core/css/cssom/StylePropertyMapReadonly.h
index cb3eb3f804b2178e5e094b29f2139694e4189644..9a60511969575146364f0920f2ff146c67f53de0 100644
--- a/third_party/WebKit/Source/core/css/cssom/StylePropertyMap.h
+++ b/third_party/WebKit/Source/core/css/cssom/StylePropertyMapReadonly.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef StylePropertyMap_h
-#define StylePropertyMap_h
+#ifndef StylePropertyMapReadonly_h
+#define StylePropertyMapReadonly_h
 
 #include "bindings/core/v8/CSSStyleValueOrCSSStyleValueSequence.h"
 #include "bindings/core/v8/CSSStyleValueOrCSSStyleValueSequenceOrString.h"
@@ -15,22 +15,19 @@
 
 namespace blink {
 
-class ExceptionState;
-
-class CORE_EXPORT StylePropertyMap
-    : public GarbageCollectedFinalized<StylePropertyMap>,
+class CORE_EXPORT StylePropertyMapReadonly
+    : public GarbageCollectedFinalized<StylePropertyMapReadonly>,
       public ScriptWrappable,
       public PairIterable<String, CSSStyleValueOrCSSStyleValueSequence> {
-  WTF_MAKE_NONCOPYABLE(StylePropertyMap);
   DEFINE_WRAPPERTYPEINFO();
+  WTF_MAKE_NONCOPYABLE(StylePropertyMapReadonly);
 
  public:
   typedef std::pair<String, CSSStyleValueOrCSSStyleValueSequence>
       StylePropertyMapEntry;
 
-  virtual ~StylePropertyMap() {}
+  virtual ~StylePropertyMapReadonly() {}
 
-  // Accessors.
   virtual CSSStyleValue* get(const String& propertyName, ExceptionState&);
   virtual CSSStyleValueVector getAll(const String& propertyName,
                                      ExceptionState&);
@@ -38,27 +35,10 @@ class CORE_EXPORT StylePropertyMap
 
   virtual Vector<String> getProperties() = 0;
 
-  // Modifiers.
-  void set(const String& propertyName,
-           CSSStyleValueOrCSSStyleValueSequenceOrString& item,
-           ExceptionState&);
-  void append(const String& propertyName,
-              CSSStyleValueOrCSSStyleValueSequenceOrString& item,
-              ExceptionState&);
-  void remove(const String& propertyName, ExceptionState&);
-
-  virtual void set(CSSPropertyID,
-                   CSSStyleValueOrCSSStyleValueSequenceOrString& item,
-                   ExceptionState&) = 0;
-  virtual void append(CSSPropertyID,
-                      CSSStyleValueOrCSSStyleValueSequenceOrString& item,
-                      ExceptionState&) = 0;
-  virtual void remove(CSSPropertyID, ExceptionState&) = 0;
-
   DEFINE_INLINE_VIRTUAL_TRACE() {}
 
  protected:
-  StylePropertyMap() {}
+  StylePropertyMapReadonly() = default;
 
   virtual CSSStyleValueVector getAllInternal(CSSPropertyID) = 0;
   virtual CSSStyleValueVector getAllInternal(