Introduce abstractions to allow embedders to test RenderViewHost

content/browser/renderer_host/render_widget_host_view_mac_unittest.mm

 // 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 "content/browser/renderer_host/render_widget_host_view_mac.h"
 
 #include "base/mac/scoped_nsautorelease_pool.h"
 #include "content/browser/browser_thread_impl.h"
 #include "content/browser/renderer_host/test_render_view_host.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/test/cocoa_test_event_utils.h"
 #import "ui/base/test/ui_cocoa_test_helper.h"
 #include "webkit/plugins/npapi/webplugin.h"
 
 using content::BrowserThread;
 using content::BrowserThreadImpl;
+using content::RenderViewHostImplTestHarness;
 
-class RenderWidgetHostViewMacTest : public RenderViewHostTestHarness {
+class RenderWidgetHostViewMacTest : public RenderViewHostImplTestHarness {
  public:
   RenderWidgetHostViewMacTest() : old_rwhv_(NULL), rwhv_mac_(NULL) {}
 
   virtual void SetUp() {
     RenderViewHostTestHarness::SetUp();
 
     // TestRenderViewHost's destruction assumes that its view is a
     // TestRenderWidgetHostView, so store its view and reset it back to the
     // stored view in |TearDown()|.
     old_rwhv_ = rvh()->GetView();
 
     // Owned by its |cocoa_view()|, i.e. |rwhv_cocoa_|.
     rwhv_mac_ = static_cast<RenderWidgetHostViewMac*>(
         content::RenderWidgetHostView::CreateViewForWidget(rvh()));
     rwhv_cocoa_.reset([rwhv_mac_->cocoa_view() retain]);
   }
   virtual void TearDown() {
     // See comment in SetUp().
-    rvh()->SetView(old_rwhv_);
+    test_rvh()->SetView(old_rwhv_);
 
     // Make sure the rwhv_mac_ is gone once the superclass's |TearDown()| runs.
     rwhv_cocoa_.reset();
     pool_.Recycle();
     MessageLoop::current()->RunAllPending();
     pool_.Recycle();
 
     RenderViewHostTestHarness::TearDown();
   }
  protected:
@@ skipping 144 matching lines @@
 
   // A click on the accelerated view should focus the RWHVCocoa.
   std::pair<NSEvent*, NSEvent*> clicks =
       cocoa_test_event_utils::MouseClickInView(accelerated_view, 1);
   [rwhv_cocoa_.get() mouseDown:clicks.first];
   EXPECT_EQ(rwhv_cocoa_.get(), [window firstResponder]);
 
   // Clean up.
   rwhv_mac_->DestroyFakePluginWindowHandle(accelerated_handle);
 }