[Autofill] Migrate ContentAutofillDriver<-->AutofillAgent IPCs to mojo.

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 2376 matching lines @@
   // An error page is expected to commit, hence why is_loading_ is set to true.
   is_loading_ = true;
   frame_tree_node_->ResetNavigationRequest(true);
 }
 
 void RenderFrameHostImpl::SetUpMojoIfNeeded() {
   if (interface_registry_.get())
     return;
 
   interface_registry_.reset(new shell::InterfaceRegistry(nullptr));
+
+  // Even RenderProcessHost has no remote interfaces, such as

[Ken Rockot(use gerrit already), 2016/06/29 22:33:21]

nit: "The RenderProcessHost may not have remote interfaces in some test
environments. In that case we create an empty InterfaceProvider so tests can
register mock implementations."

[leonhsl(Using Gerrit), 2016/07/01 13:04:59]

Done.

+  // MockRenderProcessHost, here still create |remote_interfaces_| to enable
+  // test codes register local implementations.
+  remote_interfaces_.reset(new shell::InterfaceProvider);

[Ken Rockot(use gerrit already), 2016/06/29 22:33:21]

nit: Move this into the if condition just below

[leonhsl(Using Gerrit), 2016/07/01 13:04:59]

Done.

   if (!GetProcess()->GetRemoteInterfaces())
     return;
 
   RegisterMojoInterfaces();
   mojom::FrameFactoryPtr frame_factory;
   GetProcess()->GetRemoteInterfaces()->GetInterface(&frame_factory);
   frame_factory->CreateFrame(routing_id_, GetProxy(&frame_),
                              frame_host_binding_.CreateInterfacePtrAndBind());
 
 
   shell::mojom::InterfaceProviderPtr remote_interfaces;
   shell::mojom::InterfaceProviderRequest remote_interfaces_request =
       GetProxy(&remote_interfaces);
-  remote_interfaces_.reset(new shell::InterfaceProvider);
   remote_interfaces_->Bind(std::move(remote_interfaces));
   frame_->GetInterfaceProvider(std::move(remote_interfaces_request));
 
 #if defined(OS_ANDROID)
   service_registry_android_ =
       ServiceRegistryAndroid::Create(interface_registry_.get(),
                                      remote_interfaces_.get());
   ServiceRegistrarAndroid::RegisterFrameHostServices(
       service_registry_android_.get());
 #endif
@@ skipping 537 matching lines @@
   // handler after it's destroyed so it can't run after the RFHI is destroyed.
   web_bluetooth_service_->SetClientConnectionErrorHandler(base::Bind(
       &RenderFrameHostImpl::DeleteWebBluetoothService, base::Unretained(this)));
 }
 
 void RenderFrameHostImpl::DeleteWebBluetoothService() {
   web_bluetooth_service_.reset();
 }
 
 }  // namespace content