Consistently use LoFi for an entire page

content/renderer/render_frame_impl.h

Index: content/renderer/render_frame_impl.h
diff --git a/content/renderer/render_frame_impl.h b/content/renderer/render_frame_impl.h
index 0189577e4e493ebf96418659b1617418041deedb..58f0a7146074e4cac5cfc98e0183451a6c496913 100644
--- a/content/renderer/render_frame_impl.h
+++ b/content/renderer/render_frame_impl.h
@@ -370,6 +370,7 @@ class CONTENT_EXPORT RenderFrameImpl
                                       v8::Local<v8::Context> context) override;
   void AddMessageToConsole(ConsoleMessageLevel level,
                            const std::string& message) override;
+  bool IsUsingLoFi() override;
 
   // blink::WebFrameClient implementation:
   blink::WebPlugin* createPlugin(blink::WebLocalFrame* frame,
@@ -1051,6 +1052,9 @@ class CONTENT_EXPORT RenderFrameImpl
 
   scoped_ptr<blink::WebUSBClient> usb_client_;
 
+  // Whether or not this RenderFrame is using Lo-Fi mode.
+  bool is_using_lofi_;
+
 #if defined(ENABLE_WEBVR)
   // The VR dispatcher attached to the frame, lazily initialized.
   scoped_ptr<VRDispatcher> vr_dispatcher_;