Move ui_test_utils::RunMessageLoop to test_utils so that it can be reused by content_browsertests.

chrome/test/base/ui_test_utils.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_TEST_BASE_UI_TEST_UTILS_H_
 #define CHROME_TEST_BASE_UI_TEST_UTILS_H_
 
 #include <map>
 #include <queue>
 #include <set>
@@ skipping 63 matching lines @@
   BROWSER_TEST_NONE = 0,                      // Don't wait for anything.
   BROWSER_TEST_WAIT_FOR_BROWSER = 1 << 0,     // Wait for a new browser.
   BROWSER_TEST_WAIT_FOR_TAB = 1 << 1,         // Wait for a new tab.
   BROWSER_TEST_WAIT_FOR_NAVIGATION = 1 << 2,  // Wait for navigation to finish.
 
   BROWSER_TEST_MASK = BROWSER_TEST_WAIT_FOR_BROWSER |
                       BROWSER_TEST_WAIT_FOR_TAB |
                       BROWSER_TEST_WAIT_FOR_NAVIGATION
 };
 
-// Turns on nestable tasks, runs the message loop, then resets nestable tasks
-// to what they were originally. Prefer this over MessageLoop::Run for in
-// process browser tests that need to block until a condition is met.
-void RunMessageLoop();
-
 // Turns on nestable tasks, runs all pending tasks in the message loop,
 // then resets nestable tasks to what they were originally. Prefer this
 // over MessageLoop::RunAllPending for in process browser tests to run
 // all pending tasks.
 void RunAllPendingInMessageLoop();
 
 // Blocks the current thread until all the pending messages in the loop of the
 // thread |thread_id| have been processed.
 void RunAllPendingInMessageLoop(content::BrowserThread::ID thread_id);
 
@@ skipping 348 matching lines @@
 // ui_controls_linux.cc and ui_controls_mac.cc
 void ClickTask(ui_controls::MouseButton button,
                int state,
                const base::Closure& followup);
 
 }  // namespace internal
 
 }  // namespace ui_test_utils
 
 #endif  // CHROME_TEST_BASE_UI_TEST_UTILS_H_