Update references to Blink's Platform API headers

cc/test/fake_web_scrollbar_theme_geometry.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 CC_TEST_FAKE_WEB_SCROLLBAR_THEME_GEOMETRY_H_
 #define CC_TEST_FAKE_WEB_SCROLLBAR_THEME_GEOMETRY_H_
 
 #include "base/memory/scoped_ptr.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebScrollbarThemeGeometry.h"
+#include "third_party/WebKit/public/platform/WebScrollbarThemeGeometry.h"
 
 namespace cc {
 
 class FakeWebScrollbarThemeGeometry : public WebKit::WebScrollbarThemeGeometry {
  public:
   static scoped_ptr<WebKit::WebScrollbarThemeGeometry> Create(bool has_thumb) {
     return scoped_ptr<WebKit::WebScrollbarThemeGeometry>(
         new FakeWebScrollbarThemeGeometry(has_thumb));
   }
 
@@ skipping 28 matching lines @@
 
  protected:
   explicit FakeWebScrollbarThemeGeometry(bool has_thumb)
       : has_thumb_(has_thumb) {}
   bool has_thumb_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_FAKE_WEB_SCROLLBAR_THEME_GEOMETRY_H_