Update refernces to Blink's Platform API (webkit)

webkit/support/test_webplugin_page_delegate.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 "webkit/support/test_webplugin_page_delegate.h"
 
-#include "third_party/WebKit/Source/Platform/chromium/public/Platform.h"
+#include "third_party/WebKit/public/platform/Platform.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebKit.h"
 
 namespace webkit_support {
 
 webkit::npapi::WebPluginDelegate*
 TestWebPluginPageDelegate::CreatePluginDelegate(
     const base::FilePath& file_path,
     const std::string& mime_type) {
   webkit::npapi::WebPluginDelegateImpl* delegate =
       webkit::npapi::WebPluginDelegateImpl::Create(file_path, mime_type);
 #if defined(OS_MACOSX) && !defined(USE_AURA)
   if (delegate)
     delegate->SetContainerVisibility(true);
 #endif
   return delegate;
 }
 
 WebKit::WebPlugin* TestWebPluginPageDelegate::CreatePluginReplacement(
     const base::FilePath& file_path) {
   return NULL;
 }
 
 WebKit::WebCookieJar* TestWebPluginPageDelegate::GetCookieJar() {
   return WebKit::Platform::current()->cookieJar();
 }
 
 }  // namespace webkit_support