Remove usage of HostZoomMap from c/b/loader via ReadyToCommitNavigation

content/browser/frame_host/render_frame_host_impl.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/frame_host/render_frame_host_impl.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 16 matching lines @@
 #include "content/browser/frame_host/frame_tree.h"
 #include "content/browser/frame_host/frame_tree_node.h"
 #include "content/browser/frame_host/navigation_entry_impl.h"
 #include "content/browser/frame_host/navigation_handle_impl.h"
 #include "content/browser/frame_host/navigation_request.h"
 #include "content/browser/frame_host/navigator.h"
 #include "content/browser/frame_host/navigator_impl.h"
 #include "content/browser/frame_host/render_frame_host_delegate.h"
 #include "content/browser/frame_host/render_frame_proxy_host.h"
 #include "content/browser/frame_host/render_widget_host_view_child_frame.h"
+#include "content/browser/host_zoom_map_observer.h"
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
 #include "content/browser/permissions/permission_service_context.h"
 #include "content/browser/permissions/permission_service_impl.h"
 #include "content/browser/presentation/presentation_service_impl.h"
 #include "content/browser/renderer_host/input/input_router_impl.h"
 #include "content/browser/renderer_host/input/timeout_monitor.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/renderer_host/render_view_host_delegate.h"
 #include "content/browser/renderer_host/render_view_host_delegate_view.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
@@ skipping 255 matching lines @@
       render_widget_host_ = new RenderWidgetHostImpl(rwh_delegate, GetProcess(),
                                                      widget_routing_id, hidden);
       render_widget_host_->set_owned_by_render_frame_host(true);
     } else {
       DCHECK(!render_widget_host_->owned_by_render_frame_host());
     }
     InputRouterImpl* ir =
         static_cast<InputRouterImpl*>(render_widget_host_->input_router());
     ir->SetFrameTreeNodeId(frame_tree_node_->frame_tree_node_id());
   }
+
+  if (delegate_->GetAsWebContents())
+    HostZoomMapObserver::CreateForWebContents(delegate->GetAsWebContents());

[nasko, 2016/10/17 22:49:03]

Why create the observer here? If it is per WebContents, it should be created in
the WebContents constructor, no?

[scottmg, 2016/10/25 20:12:40]

Why, indeed. Done.

 }
 
 RenderFrameHostImpl::~RenderFrameHostImpl() {
   // Release the WebUI instances before all else as the WebUI may accesses the
   // RenderFrameHost during cleanup.
   ClearAllWebUI();
 
   GetProcess()->RemoveRoute(routing_id_);
   g_routing_id_frame_map.Get().erase(
       RenderFrameHostID(GetProcess()->GetID(), routing_id_));
@@ skipping 2760 matching lines @@
   web_bluetooth_service_->SetClientConnectionErrorHandler(base::Bind(
       &RenderFrameHostImpl::DeleteWebBluetoothService, base::Unretained(this)));
   return web_bluetooth_service_.get();
 }
 
 void RenderFrameHostImpl::DeleteWebBluetoothService() {
   web_bluetooth_service_.reset();
 }
 
 }  // namespace content