Move PageTransition into content namespace. While I'm touching all these files, I've also updated...

chrome/test/base/ui_test_utils.cc

 // Copyright (c) 2011 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 "chrome/test/base/ui_test_utils.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 336 matching lines @@
   for (std::vector<Browser*>::const_iterator iter = BrowserList::begin();
        iter != BrowserList::end();
        ++iter) {
     initial_browsers.insert(*iter);
   }
 
   WindowedNotificationObserver tab_added_observer(
       content::NOTIFICATION_TAB_ADDED,
       NotificationService::AllSources());
 
-  browser->OpenURL(url, GURL(), disposition, PageTransition::TYPED);
+  browser->OpenURL(url, GURL(), disposition, content::PAGE_TRANSITION_TYPED);
   if (browser_test_flags & BROWSER_TEST_WAIT_FOR_BROWSER)
     browser = WaitForBrowserNotInSet(initial_browsers);
   if (browser_test_flags & BROWSER_TEST_WAIT_FOR_TAB)
     tab_added_observer.Wait();
   if (!(browser_test_flags & BROWSER_TEST_WAIT_FOR_NAVIGATION)) {
     // Some other flag caused the wait prior to this.
     return;
   }
   TabContents* tab_contents = NULL;
   if (disposition == NEW_BACKGROUND_TAB) {
@@ skipping 619 matching lines @@
   return taker.TakeRenderWidgetSnapshot(rwh, page_size, page_size, bitmap);
 }
 
 bool TakeEntirePageSnapshot(RenderViewHost* rvh, SkBitmap* bitmap) {
   DCHECK(bitmap);
   SnapshotTaker taker;
   return taker.TakeEntirePageSnapshot(rvh, bitmap);
 }
 
 }  // namespace ui_test_utils