Renderers should obtain browser InterfaceProvider by connecting to browser

content/browser/battery_status/battery_monitor_integration_browsertest.cc

 // Copyright 2014 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 <utility>
 
 #include "base/callback_list.h"
 #include "base/lazy_instance.h"
 #include "base/macros.h"
 #include "base/threading/thread_task_runner_handle.h"
@@ skipping 74 matching lines @@
   QueryNextStatusCallback callback_;
 };
 
 // Overrides the default service implementation with the test implementation
 // declared above.
 class TestContentBrowserClient : public ContentBrowserClient {
  public:
   void ExposeInterfacesToRenderer(
       shell::InterfaceRegistry* registry,
       RenderProcessHost* render_process_host) override {
-    registry->AddInterface(base::Bind(&FakeBatteryMonitor::Create));
+    scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner =
+        BrowserThread::GetTaskRunnerForThread(BrowserThread::UI);
+    registry->AddInterface(base::Bind(&FakeBatteryMonitor::Create),
+                           ui_task_runner);
   }
 
   void AppendExtraCommandLineSwitches(base::CommandLine* command_line,
                                       int child_process_id) override {
     // Necessary for passing kIsolateSitesForTesting flag to the renderer.
     ShellContentBrowserClient::Get()->AppendExtraCommandLineSwitches(
         command_line, child_process_id);
   }
 
 #if defined(OS_ANDROID)
@@ skipping 73 matching lines @@
   TestNavigationObserver same_tab_observer2(shell()->web_contents(), 1);
   status.level = 0.6;
   UpdateBattery(status);
   same_tab_observer2.Wait();
   EXPECT_EQ("pass", shell()->web_contents()->GetLastCommittedURL().ref());
 }
 
 }  //  namespace
 
 }  //  namespace content