Add FrameHost mojo service

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index df3decf81cfa4d64c33f75b9fc1c8c215b09a726..287ca001373e8da26caae3a0ae4e6c8fa3ae3769 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -1291,8 +1291,6 @@ bool RenderViewImpl::OnMessageReceived(const IPC::Message& message) {
     IPC_MESSAGE_HANDLER(ViewMsg_SaveImageAt, OnSaveImageAt)
     IPC_MESSAGE_HANDLER(ViewMsg_SetPageScale, OnSetPageScale)
     IPC_MESSAGE_HANDLER(ViewMsg_Zoom, OnZoom)
-    IPC_MESSAGE_HANDLER(ViewMsg_SetZoomLevelForLoadingURL,
-                        OnSetZoomLevelForLoadingURL)
     IPC_MESSAGE_HANDLER(ViewMsg_SetPageEncoding, OnSetPageEncoding)
     IPC_MESSAGE_HANDLER(ViewMsg_ResetPageEncodingToDefault,
                         OnResetPageEncodingToDefault)
@@ -2375,21 +2373,6 @@ void RenderViewImpl::OnZoom(PageZoom zoom) {
   zoomLevelChanged();
 }
 
-void RenderViewImpl::OnSetZoomLevelForLoadingURL(const GURL& url,
-                                                 double zoom_level) {
-  // TODO(wjmaclean): We should see if this restriction is really necessary,
-  // since it isn't enforced in other parts of the page zoom system (e.g.
-  // when a users changes the zoom of a currently displayed page). Android
-  // has no UI for this, so in theory the following code would normally just use
-  // the default zoom anyways.
-#if !defined(OS_ANDROID)

[jam, 2016/05/17 17:20:30]

hmm maybe best to keep android behavior same in this cl, and change that in a
different cl if you want? that way if there's any regressions, it's a simple cl
to revert.

[scottmg, 2016/05/17 17:36:16]

Yeah, I only enabled it because it made the test work. I couldn't understand why
just moving it from here to render_frame_impl_browsertest made it start failing,
so after a while I gave up and enabled this code.

But I had forgotten that Android uses the crazy out-of-source test disabling :/
https://code.google.com/p/chromium/codesearch#chromium/src/build/android/pyli...

So... re-disabled on OS_ANDROID, and changed the test disable thingy in
build/android.

-  // On Android, page zoom isn't used, and in case of WebView, text zoom is used
-  // for legacy WebView text scaling emulation. Thus, the code that resets
-  // the zoom level from this map will be effectively resetting text zoom level.
-  host_zoom_levels_[url] = zoom_level;
-#endif
-}
-
 void RenderViewImpl::OnSetZoomLevel(
     PageMsg_SetZoomLevel_Command command,
     double zoom_level) {