Move Render(View|Widget)Host and associated classes to content namespace.

content/browser/renderer_host/render_widget_host_unittest.cc

Index: content/browser/renderer_host/render_widget_host_unittest.cc
diff --git a/content/browser/renderer_host/render_widget_host_unittest.cc b/content/browser/renderer_host/render_widget_host_unittest.cc
index f8213b97b87bd30f5683903584909ce77f4b71fc..7b785d51fbafb74de9074d71ddea4633ead05570 100644
--- a/content/browser/renderer_host/render_widget_host_unittest.cc
+++ b/content/browser/renderer_host/render_widget_host_unittest.cc
@@ -27,9 +27,9 @@
 
 using base::TimeDelta;
 using content::BrowserThread;
-
 using content::BrowserThreadImpl;
-
+using content::RenderWidgetHost;
+using content::RenderWidgetHostImpl;
 using WebKit::WebInputEvent;
 using WebKit::WebMouseWheelEvent;
 
@@ -158,6 +158,14 @@ class MockRenderWidgetHost : public RenderWidgetHostImpl {
         unresponsive_timer_fired_(false) {
   }
 
+  // Allow poking at a few private members.
+  using RenderWidgetHostImpl::OnMsgPaintAtSizeAck;
+  using RenderWidgetHostImpl::OnMsgUpdateRect;
+  using RenderWidgetHostImpl::RendererExited;
+  using RenderWidgetHostImpl::in_flight_size_;
+  using RenderWidgetHostImpl::is_hidden_;
+  using RenderWidgetHostImpl::resize_ack_pending_;
+
   // Tests that make sure we ignore keyboard event acknowledgments to events we
   // didn't send work by making sure we didn't call UnhandledKeyboardEvent().
   bool unhandled_keyboard_event_called() const {