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

chrome/browser/chromeos/panels/panel_browsertest.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 "base/command_line.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/test/base/in_process_browser_test.h"
@@ skipping 30 matching lines @@
       "  }"
       "</script>"
       "</body></html>";
   GURL url("data:text/html," + HTML);
   CommandLine::ForCurrentProcess()->AppendSwitch(
       switches::kDisablePopupBlocking);
 
   ui_test_utils::WindowedNotificationObserver tab_added_observer(
       content::NOTIFICATION_TAB_ADDED,
       NotificationService::AllSources());
-  browser()->OpenURL(url, GURL(), CURRENT_TAB, PageTransition::TYPED);
+  browser()->OpenURL(url, GURL(), CURRENT_TAB, content::PAGE_TRANSITION_TYPED);
   tab_added_observer.Wait();
 
   // Find the new browser.
   Browser* new_browser = NULL;
   for (BrowserList::const_iterator i = BrowserList::begin();
        i != BrowserList::end() && !new_browser; ++i) {
     if (*i != browser())
       new_browser = *i;
   }
 
@@ skipping 22 matching lines @@
       "  }"
         "</script>"
       "</body></html>";
   GURL url("data:text/html," + HTML);
   CommandLine::ForCurrentProcess()->AppendSwitch(
       switches::kDisablePopupBlocking);
   int old_tab_count = browser()->tab_count();
   ui_test_utils::WindowedNotificationObserver tab_added_observer(
       content::NOTIFICATION_TAB_ADDED,
       NotificationService::AllSources());
-  browser()->OpenURL(url, GURL(), CURRENT_TAB, PageTransition::TYPED);
+  browser()->OpenURL(url, GURL(), CURRENT_TAB, content::PAGE_TRANSITION_TYPED);
   tab_added_observer.Wait();
 
   // Shouldn't find a new browser.
   Browser* new_browser = NULL;
   for (BrowserList::const_iterator i = BrowserList::begin();
        i != BrowserList::end() && !new_browser; ++i) {
     if (*i != browser())
       new_browser = *i;
   }
   EXPECT_FALSE(new_browser);
 
   // Should find a new tab.
   EXPECT_EQ(old_tab_count + 1, browser()->tab_count());
 }
 
 }  // namespace chromeos