Remove use of deprecated MessageLoop methods in chrome/.

chrome/browser/apps/guest_view/web_view_interactive_browsertest.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 <stddef.h>
 
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/stringprintf.h"
@@ skipping 1017 matching lines @@
   // In the drag drop test we add 20px padding to the page body because on
   // windows if we get too close to the edge of the window the resize cursor
   // appears and we start dragging the window edge.
   corner_.Offset(20, 20);
 
   // Flush any pending events to make sure we start with a clean slate.
   content::RunAllPendingInMessageLoop();
   for (;;) {
     base::RunLoop run_loop;
     quit_closure_ = run_loop.QuitClosure();
-    base::MessageLoop::current()->PostTask(
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE, base::Bind(&WebViewInteractiveTestBase::DragTestStep1,
                               base::Unretained(this)));
     run_loop.Run();
 
     if (last_drop_data_ == "Drop me")
       break;
 
     LOG(INFO) << "Drag was cancelled in interactive_test, restarting drag";
 
     // Reset state for next try.
@@ skipping 291 matching lines @@
   // this time.
   for (size_t i = 0; i < 4; ++i)
     SendKeyPressToPlatformApp(ui::VKEY_TAB);
   ExtensionTestMessageListener webview_button_not_focused_listener(
       "WebViewInteractiveTest.WebViewButtonWasNotFocused", false);
   webview_button_not_focused_listener.set_failure_message(
       "WebViewInteractiveTest.WebViewButtonWasFocused");
   SendMessageToEmbedder("verify");
   EXPECT_TRUE(webview_button_not_focused_listener.WaitUntilSatisfied());
 }