Use std::string instead of WTF::String / TextStream

cc/CCVideoLayerImpl.h

 // Copyright 2012 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 CCVideoLayerImpl_h
 #define CCVideoLayerImpl_h
 
 #include "CCLayerImpl.h"
 #include "GraphicsContext3D.h"
 #include "IntSize.h"
@@ skipping 15 matching lines @@
     static PassOwnPtr<CCVideoLayerImpl> create(int id, WebKit::WebVideoFrameProvider* provider)
     {
         return adoptPtr(new CCVideoLayerImpl(id, provider));
     }
     virtual ~CCVideoLayerImpl();
 
     virtual void willDraw(CCResourceProvider*) OVERRIDE;
     virtual void appendQuads(CCQuadSink&, CCAppendQuadsData&) OVERRIDE;
     virtual void didDraw(CCResourceProvider*) OVERRIDE;
 
-    virtual void dumpLayerProperties(TextStream&, int indent) const OVERRIDE;
+    virtual void dumpLayerProperties(std::string*, int indent) const OVERRIDE;
 
     Mutex& providerMutex() { return m_providerMutex; }
 
     // WebKit::WebVideoFrameProvider::Client implementation.
     virtual void stopUsingProvider(); // Callable on any thread.
     virtual void didReceiveFrame(); // Callable on impl thread.
     virtual void didUpdateMatrix(const float*); // Callable on impl thread.
 
     virtual void didLoseContext() OVERRIDE;
 
@@ skipping 33 matching lines @@
     GC3Denum m_format;
     CCResourceProvider::ResourceId m_externalTextureResource;
 
     // Each index in this array corresponds to a plane in WebKit::WebVideoFrame.
     FramePlane m_framePlanes[WebKit::WebVideoFrame::maxPlanes];
 };
 
 }
 
 #endif // CCVideoLayerImpl_h