Update references to Blink's Platform API headers

chrome/renderer/webview_color_overlay.h

 // Copyright (c) 2011 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 CHROME_RENDERER_WEBVIEW_COLOR_OVERLAY_H_
 #define CHROME_RENDERER_WEBVIEW_COLOR_OVERLAY_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebRect.h"
+#include "third_party/WebKit/public/platform/WebRect.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPageOverlay.h"
 #include "third_party/skia/include/core/SkColor.h"
 
 namespace content {
 class RenderView;
 }
 
 // This class draws the given color on a PageOverlay of a WebView.
 class WebViewColorOverlay : public WebKit::WebPageOverlay {
  public:
   WebViewColorOverlay(content::RenderView* render_view, SkColor color);
   virtual ~WebViewColorOverlay();
 
  private:
   // WebKit::WebPageOverlay implementation:
   virtual void paintPageOverlay(WebKit::WebCanvas* canvas);
 
   content::RenderView* render_view_;
   SkColor color_;
 
   DISALLOW_COPY_AND_ASSIGN(WebViewColorOverlay);
 };
 
 #endif  // CHROME_RENDERER_WEBVIEW_COLOR_OVERLAY_H_