[Autofill] Migrate ChromePasswordManagerClient<-->PasswordGenerationAgent IPCs to mojo.

content/renderer/render_frame_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/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 2430 matching lines @@
 
 AssociatedInterfaceRegistry*
 RenderFrameImpl::GetAssociatedInterfaceRegistry() {
   return &associated_interfaces_;
 }
 
 AssociatedInterfaceProvider*
 RenderFrameImpl::GetRemoteAssociatedInterfaces() {
   if (!remote_associated_interfaces_) {
     ChildThreadImpl* thread = ChildThreadImpl::current();
-    mojom::AssociatedInterfaceProviderAssociatedPtr remote_interfaces;
-    thread->GetRemoteRouteProvider()->GetRoute(
-        routing_id_,
-        mojo::GetProxy(&remote_interfaces,
-                       thread->channel()->GetAssociatedGroup()));
-    remote_associated_interfaces_.reset(new AssociatedInterfaceProviderImpl(
-        std::move(remote_interfaces)));
+    if (thread) {
+      mojom::AssociatedInterfaceProviderAssociatedPtr remote_interfaces;
+      thread->GetRemoteRouteProvider()->GetRoute(
+          routing_id_, mojo::GetProxy(&remote_interfaces,
+                                      thread->channel()->GetAssociatedGroup()));
+      remote_associated_interfaces_.reset(
+          new AssociatedInterfaceProviderImpl(std::move(remote_interfaces)));
+    } else {
+      // In some tests the thread may be null,
+      // so set up a self-contained interface provider instead.
+      remote_associated_interfaces_.reset(
+          new AssociatedInterfaceProviderImpl());
+    }
   }
   return remote_associated_interfaces_.get();
 }
 
 #if defined(ENABLE_PLUGINS)
 void RenderFrameImpl::RegisterPeripheralPlugin(
     const url::Origin& content_origin,
     const base::Closure& unthrottle_callback) {
   return plugin_power_saver_helper_->RegisterPeripheralPlugin(
       content_origin, unthrottle_callback);
@@ skipping 3921 matching lines @@
   // event target. Potentially a Pepper plugin will receive the event.
   // In order to tell whether a plugin gets the last mouse event and which it
   // is, we set |pepper_last_mouse_event_target_| to null here. If a plugin gets
   // the event, it will notify us via DidReceiveMouseEvent() and set itself as
   // |pepper_last_mouse_event_target_|.
   pepper_last_mouse_event_target_ = nullptr;
 #endif
 }
 
 }  // namespace content