Move RunAllPendingInMessageLoop from ui_test_utils.h to test_utils.h, so that it can be reused by c…

chrome/browser/browser_focus_uitest.cc

Index: chrome/browser/browser_focus_uitest.cc
===================================================================
--- chrome/browser/browser_focus_uitest.cc	(revision 149002)
+++ chrome/browser/browser_focus_uitest.cc	(working copy)
@@ -561,7 +561,7 @@
     // At this point the renderer has sent us a message asking to advance the
     // focus (as the end of the focus loop was reached in the renderer).
     // We need to run the message loop to process it.
-    ui_test_utils::RunAllPendingInMessageLoop();
+    content::RunAllPendingInMessageLoop();
   }
 
   // Now let's try reverse focus traversal.
@@ -613,7 +613,7 @@
     // At this point the renderer has sent us a message asking to advance the
     // focus (as the end of the focus loop was reached in the renderer).
     // We need to run the message loop to process it.
-    ui_test_utils::RunAllPendingInMessageLoop();
+    content::RunAllPendingInMessageLoop();
   }
 }
 
@@ -688,7 +688,7 @@
     // At this point the renderer has sent us a message asking to advance the
     // focus (as the end of the focus loop was reached in the renderer).
     // We need to run the message loop to process it.
-    ui_test_utils::RunAllPendingInMessageLoop();
+    content::RunAllPendingInMessageLoop();
   }
 
   // Now let's try reverse focus traversal.
@@ -731,7 +731,7 @@
     // At this point the renderer has sent us a message asking to advance the
     // focus (as the end of the focus loop was reached in the renderer).
     // We need to run the message loop to process it.
-    ui_test_utils::RunAllPendingInMessageLoop();
+    content::RunAllPendingInMessageLoop();
   }
 }
 
@@ -878,7 +878,7 @@
     chrome::NewTab(browser());
     observer.Wait();
   }
-  ui_test_utils::RunAllPendingInMessageLoop();
+  content::RunAllPendingInMessageLoop();
 
   {
     content::WindowedNotificationObserver observer(