Add FrameHost mojo service

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index d45cdaae73337a466a57500d384aa5f935f24aee..13f8928e57d98159fe65dfb68fcc72fdb1944894 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -1146,6 +1146,10 @@ void RenderFrameImpl::InitializeBlameContext(RenderFrameImpl* parent_frame) {
   blame_context_->Initialize();
 }
 
+void RenderFrameImpl::OnGotZoomLevel(const GURL& url, double zoom_level) {
+  host_zoom_levels_[url] = zoom_level;
+}
+
 RenderWidget* RenderFrameImpl::GetRenderWidget() {
   RenderFrameImpl* local_root =
       RenderFrameImpl::FromWebFrame(frame_->localRoot());
@@ -3900,6 +3904,16 @@ void RenderFrameImpl::willSendRequest(
 
   if (!render_view_->renderer_preferences_.enable_referrers)
     request.setHTTPReferrer(WebString(), blink::WebReferrerPolicyDefault);
+
+  if (extra_data->is_main_frame()) {
+    if (!host_zoom_level_.is_bound()) {
+      RenderThread::Get()->GetServiceRegistry()->ConnectToRemoteService(
+          mojo::GetProxy(&host_zoom_level_));
+    }
+    host_zoom_level_->GetZoomLevel(request_url, render_view_->GetRoutingID(),
+                                   base::Bind(&RenderFrameImpl::OnGotZoomLevel,
+                                              weak_factory_.GetWeakPtr()));
+  }
 }
 
 void RenderFrameImpl::didReceiveResponse(
@@ -4495,7 +4509,7 @@ void RenderFrameImpl::SendDidCommitProvisionalLoad(
     // Set zoom level, but don't do it for full-page plugin since they don't use
     // the same zoom settings.
     HostZoomLevels::iterator host_zoom =
-        render_view_->host_zoom_levels_.find(GURL(request.url()));
+        host_zoom_levels_.find(GURL(request.url()));
     if (render_view_->webview()->mainFrame()->isWebLocalFrame() &&
         render_view_->webview()->mainFrame()->document().isPluginDocument()) {
       // Reset the zoom levels for plugins.
@@ -4503,15 +4517,15 @@ void RenderFrameImpl::SendDidCommitProvisionalLoad(
     } else {
       // If the zoom level is not found, then do nothing. In-page navigation
       // relies on not changing the zoom level in this case.
-      if (host_zoom != render_view_->host_zoom_levels_.end())
+      if (host_zoom != host_zoom_levels_.end())
         render_view_->SetZoomLevel(host_zoom->second);
     }
 
-    if (host_zoom != render_view_->host_zoom_levels_.end()) {
+    if (host_zoom != host_zoom_levels_.end()) {
       // This zoom level was merely recorded transiently for this load.  We can
       // erase it now.  If at some point we reload this page, the browser will
       // send us a new, up-to-date zoom level.
-      render_view_->host_zoom_levels_.erase(host_zoom);
+      host_zoom_levels_.erase(host_zoom);
     }
 
     // Update contents MIME type for main frame.