Update references to Blink's Platform API headers

content/renderer/external_popup_menu_browsertest.cc

 // 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.
 
 #include "base/utf_string_conversions.h"
 #include "content/common/view_messages.h"
 #include "content/public/test/render_view_test.h"
 #include "content/renderer/render_view_impl.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebSize.h"
+#include "third_party/WebKit/public/platform/WebSize.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
 
 // Tests for the external select popup menu (Mac specific).
 
 namespace content {
 namespace {
 
 const char* const kSelectID = "mySelect";
 const char* const kEmptySelectID = "myEmptySelect";
 
@@ skipping 118 matching lines @@
 
   // Select something, it causes the select to be removed from the page.
   view()->OnSelectPopupMenuItem(0);
 
   // Just to check the soundness of the test, call SimulateElementClick again.
   // It should return false as the select has been removed.
   EXPECT_FALSE(SimulateElementClick(kSelectID));
 }
 
 }  // namespace content