Introduce content::RenderWidgetHostViewPort (in content/port/browser).

content/browser/tab_contents/tab_contents_unittest.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 "base/logging.h"
 #include "base/utf_string_conversions.h"
 #include "content/browser/mock_content_browser_client.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/renderer_host/render_widget_host_view.h"
 #include "content/browser/renderer_host/test_render_view_host.h"
@@ skipping 164 matching lines @@
     ViewHostMsg_FrameNavigate_Params params;
     InitNavigateParams(&params, page_id, url, content::PAGE_TRANSITION_TYPED);
     DidNavigate(GetRenderViewHostForTesting(), params);
   }
 
   void TestRenderViewGone(base::TerminationStatus status, int error_code) {
     RenderViewGone(GetRenderViewHostForTesting(), status, error_code);
   }
 
   bool is_showing() const {
-    return static_cast<TestRenderWidgetHostView*>(
+    return static_cast<content::TestRenderWidgetHostView*>(
         GetRenderViewHostForTesting()->view())->is_showing();
   }
 
   void ClearStates() {
     state_ = NULL;
     deleted_ = NULL;
     delegate_ = NULL;
   }
 
   void CommandReceived() {
@@ skipping 1692 matching lines @@
   // It should have a transient entry.
   EXPECT_TRUE(other_controller.GetTransientEntry());
 
   // And the interstitial should be showing.
   EXPECT_TRUE(other_contents->ShowingInterstitialPage());
 
   // And the interstitial should do a reload on don't proceed.
   EXPECT_TRUE(static_cast<InterstitialPageImpl*>(
       other_contents->GetInterstitialPage())->reload_on_dont_proceed());
 }