Update references to Blink's Platform API headers

content/common/gpu/client/gl_helper.cc

 // Copyright (c) 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.
 
 #include "content/common/gpu/client/gl_helper.h"
 
 #include <queue>
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/time.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebCString.h"
+#include "third_party/WebKit/public/platform/WebCString.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/size.h"
 #include "ui/gl/gl_bindings.h"
 
 using WebKit::WebGLId;
 using WebKit::WebGraphicsContext3D;
 
 namespace {
 
@@ skipping 712 matching lines @@
       context_->copyTexSubImage2D(GL_TEXTURE_2D, 0,
                                   rect.x(), rect.y(),
                                   rect.x(), rect.y(),
                                   rect.width(), rect.height());
     }
     context_->flush();
   }
 }
 
 }  // namespace content