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

third_party/WebKit/Source/modules/csspaint/CSSPaintDefinition.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 "modules/csspaint/CSSPaintDefinition.h"
 
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/V8Binding.h"
 #include "bindings/core/v8/V8BindingMacros.h"
 #include "bindings/core/v8/V8ObjectConstructor.h"
@@ skipping 77 matching lines @@
     return nullptr;
 
   DCHECK(layoutObject.node());
 
   PaintRenderingContext2D* renderingContext = PaintRenderingContext2D::create(
       ImageBuffer::create(WTF::wrapUnique(
           new RecordingImageBufferSurface(size, nullptr /* fallbackFactory */,
                                           m_hasAlpha ? NonOpaque : Opaque))),
       m_hasAlpha, zoom);
   PaintSize* paintSize = PaintSize::create(specifiedSize);
-  StylePropertyMap* styleMap = FilteredComputedStylePropertyMap::create(
+  StylePropertyMapReadonly* styleMap = FilteredComputedStylePropertyMap::create(
       CSSComputedStyleDeclaration::create(layoutObject.node()),
       m_nativeInvalidationProperties, m_customInvalidationProperties,
       layoutObject.node());
 
   v8::Local<v8::Value> argv[] = {
       ToV8(renderingContext, m_scriptState->context()->Global(), isolate),
       ToV8(paintSize, m_scriptState->context()->Global(), isolate),
       ToV8(styleMap, m_scriptState->context()->Global(), isolate),
       ToV8(*paintArguments, m_scriptState->context()->Global(), isolate)};
 
@@ skipping 28 matching lines @@
   v8::Local<v8::Object> paintInstance;
   if (V8ObjectConstructor::newInstance(isolate, constructor)
           .ToLocal(&paintInstance)) {
     m_instance.set(isolate, paintInstance);
   }
 
   m_didCallConstructor = true;
 }
 
 }  // namespace blink