Make classes and structures in core/style, core/plugins and core/streams fast-allocated.

Source/core/streams/ReadableStreamImpl.h

 // Copyright 2014 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.
 
 #ifndef ReadableStreamImpl_h
 #define ReadableStreamImpl_h
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/V8ArrayBuffer.h"
 #include "bindings/core/v8/V8Binding.h"
 #include "bindings/core/v8/V8IteratorResultValue.h"
 #include "core/dom/DOMArrayBuffer.h"
 #include "core/dom/DOMArrayBufferView.h"
 #include "core/dom/DOMException.h"
 #include "core/streams/ReadableStream.h"
 #include "wtf/Deque.h"
 #include "wtf/RefPtr.h"
 #include "wtf/text/WTFString.h"
 #include <utility>
 
 namespace blink {
 
 // We define the default ChunkTypeTraits for frequently used types.
 template<typename ChunkType>
-class ReadableStreamChunkTypeTraits { };
+class ReadableStreamChunkTypeTraits {
+    STATIC_ONLY(ReadableStreamChunkTypeTraits);
+};
 
 template<>
 class ReadableStreamChunkTypeTraits<String> {
 public:
     typedef String HoldType;
     typedef const String& PassType;
 
     static size_t size(const String& chunk) { return chunk.length(); }
     static ScriptValue toScriptValue(ScriptState* scriptState, const HoldType& value)
     {
@@ skipping 176 matching lines @@
     ASSERT(queue.isEmpty());
 
     queue.swap(m_queue);
     m_totalQueueSize = 0;
     readInternalPostAction();
 }
 
 } // namespace blink
 
 #endif // ReadableStreamImpl_h