Add FrameHost mojo service

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 6ab8b3794e80c5111b99acb545eef2764214b630..85d55ffc0c9e4b707f9efda17d4570e287b0a5a7 100644
--- a/content/renderer/render_frame_impl.h
+++ b/content/renderer/render_frame_impl.h
@@ -22,6 +22,7 @@
 #include "base/process/process_handle.h"
 #include "build/build_config.h"
 #include "content/common/accessibility_mode_enums.h"
+#include "content/common/frame_host.mojom.h"
 #include "content/common/frame_message_enums.h"
 #include "content/common/mojo/service_registry_impl.h"
 #include "content/public/common/console_message_level.h"
@@ -691,6 +692,7 @@ class CONTENT_EXPORT RenderFrameImpl
   FRIEND_TEST_ALL_PREFIXES(ExternalPopupMenuTest, ShowPopupThenNavigate);
   FRIEND_TEST_ALL_PREFIXES(RendererAccessibilityTest,
                            AccessibilityMessagesQueueWhileSwappedOut);
+  FRIEND_TEST_ALL_PREFIXES(RenderFrameImplTest, ZoomLimit);
 
   // A wrapper class used as the callback for JavaScript executed
   // in an isolated world.
@@ -1014,6 +1016,8 @@ class CONTENT_EXPORT RenderFrameImpl
 
   void InitializeBlameContext(RenderFrameImpl* parent_frame);
 
+  void OnGotZoomLevel(const GURL& url, double zoom_level);
+
   // Stores the WebLocalFrame we are associated with.  This is null from the
   // constructor until BindToWebFrame is called, and it is null after
   // frameDetached is called until destruction (which is asynchronous in the
@@ -1210,6 +1214,9 @@ class CONTENT_EXPORT RenderFrameImpl
 
   std::unique_ptr<blink::WebBluetooth> bluetooth_;
 
+  HostZoomLevels host_zoom_levels_;
+  mojom::FrameHostPtr frame_host_;
+
   // Manages play, pause notifications for WebMediaPlayer implementations; its
   // lifetime is tied to the RenderFrame via the RenderFrameObserver interface.
   media::RendererWebMediaPlayerDelegate* media_player_delegate_;