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

chrome/browser/oom_priority_manager_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 "chrome/browser/oom_priority_manager.h"
 
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "googleurl/src/gurl.h"
 
 namespace {
 
 class OomPriorityManagerTest : public InProcessBrowserTest {
 };
 
 IN_PROC_BROWSER_TEST_F(OomPriorityManagerTest, OomPriorityManagerBasics) {
   using namespace ui_test_utils;
 
   // Get three tabs open.  Load asynchronously to speed up the test.
   WindowedNotificationObserver load1(content::NOTIFICATION_LOAD_STOP,
                                      NotificationService::AllSources());
   OpenURLParams open1(GURL("chrome://about"), GURL(),
-                      CURRENT_TAB, PageTransition::TYPED);
+                      CURRENT_TAB, content::PAGE_TRANSITION_TYPED);
   browser()->OpenURL(open1);
 
   WindowedNotificationObserver load2(content::NOTIFICATION_LOAD_STOP,
                                      NotificationService::AllSources());
   OpenURLParams open2(GURL("chrome://credits"), GURL(),
-                      NEW_FOREGROUND_TAB, PageTransition::TYPED);
+                      NEW_FOREGROUND_TAB, content::PAGE_TRANSITION_TYPED);
   browser()->OpenURL(open2);
 
   WindowedNotificationObserver load3(content::NOTIFICATION_LOAD_STOP,
                                      NotificationService::AllSources());
   OpenURLParams open3(GURL("chrome://terms"), GURL(),
-                      NEW_FOREGROUND_TAB, PageTransition::TYPED);
+                      NEW_FOREGROUND_TAB, content::PAGE_TRANSITION_TYPED);
   browser()->OpenURL(open3);
 
   load1.Wait();
   load2.Wait();
   load3.Wait();
 
   EXPECT_EQ(3, browser()->tab_count());
 
   // Discard a tab.  It should kill the first tab, since it was the oldest
   // and was not selected.
@@ skipping 23 matching lines @@
   WindowedNotificationObserver reload1(content::NOTIFICATION_LOAD_STOP,
                                        NotificationService::AllSources());
   browser()->SelectNumberedTab(0);
   reload1.Wait();
   EXPECT_FALSE(browser()->IsTabDiscarded(0));
   EXPECT_TRUE(browser()->IsTabDiscarded(1));
   EXPECT_TRUE(browser()->IsTabDiscarded(2));
 }
 
 }  // namespace