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

content/browser/renderer_host/test_render_view_host.h

Index: content/browser/renderer_host/test_render_view_host.h
diff --git a/content/browser/renderer_host/test_render_view_host.h b/content/browser/renderer_host/test_render_view_host.h
index 045d1bed7cc2bd2d62ecd11562570ec16cd72366..6727807070a84e4a5a01613ecde760a968e62042 100644
--- a/content/browser/renderer_host/test_render_view_host.h
+++ b/content/browser/renderer_host/test_render_view_host.h
@@ -13,7 +13,7 @@
 #include "content/browser/renderer_host/mock_render_process_host.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/renderer_host/render_view_host_factory.h"
-#include "content/browser/renderer_host/render_widget_host_view.h"
+#include "content/browser/renderer_host/render_widget_host_view_base.h"
 #include "content/public/common/page_transition_types.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -50,6 +50,9 @@ void SimulateUpdateRect(RenderWidgetHost* widget,
 //
 // To use, derive your test base class from RenderViewHostTestHarness.
 
+
+namespace content {
+
 // TestRenderViewHostView ------------------------------------------------------
 
 // Subclass the RenderViewHost's view so that we can call Show(), etc.,
@@ -87,7 +90,7 @@ class TestRenderWidgetHostView : public RenderWidgetHostViewBase {
   virtual void UnhandledWheelEvent(
       const WebKit::WebMouseWheelEvent& event) OVERRIDE {}
 
-  // RenderWidgetHostViewBase implementation.
+  // RenderWidgetHostViewPort implementation.
   virtual void InitAsPopup(RenderWidgetHostView* parent_host_view,
                            const gfx::Rect& pos) OVERRIDE {}
   virtual void InitAsFullscreen(
@@ -177,6 +180,8 @@ class TestRenderWidgetHostView : public RenderWidgetHostViewBase {
   bool is_showing_;
 };
 
+}  // namespace content
+
 // TestRenderViewHost ----------------------------------------------------------
 
 // TODO(brettw) this should use a TestTabContents which should be generalized