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

chrome/browser/ui/webui/active_downloads_ui.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/ui/webui/active_downloads_ui.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 285 matching lines @@
   return false;
 }
 
 void ActiveDownloadsHandler::OpenNewFullWindow(const ListValue* args) {
   std::string url = UTF16ToUTF8(ExtractStringValue(args));
 
   if (SelectTab(GURL(url)))
     return;
 
   Browser* browser = BrowserList::GetLastActive();
-  browser::NavigateParams params(browser, GURL(url), PageTransition::LINK);
+  browser::NavigateParams params(
+      browser, GURL(url), content::PAGE_TRANSITION_LINK);
   params.disposition = NEW_FOREGROUND_TAB;
   browser::Navigate(&params);
   browser->window()->Show();
 }
 
 void ActiveDownloadsHandler::ModelChanged() {
   UpdateDownloadList();
 }
 
 void ActiveDownloadsHandler::HandleGetDownloads(const ListValue* args) {
@@ skipping 78 matching lines @@
   Profile* profile = Profile::FromBrowserContext(contents->browser_context());
   profile->GetChromeURLDataManager()->AddDataSource(html_source);
 }
 
 #if defined(TOUCH_UI)
 
 // static
 TabContents* ActiveDownloadsUI::OpenPopup(Profile* profile) {
   Browser* browser = Browser::GetOrCreateTabbedBrowser(profile);
   OpenURLParams params(GURL(chrome::kChromeUIActiveDownloadsURL), GURL(),
-                      SINGLETON_TAB, PageTransition::LINK);
+                      SINGLETON_TAB, content::PAGE_TRANSITION_LINK);
   TabContents* download_contents = browser->OpenURL(params);
   browser->window()->Show();
   return download_contents;
 }
 
 TabContents* ActiveDownloadsUI::GetPopup(Browser** browser) {
   for (TabContentsIterator it; !it.done(); ++it) {
     TabContents* tab = it->tab_contents();
     const GURL& url = tab->GetURL();
     if (url.SchemeIs(chrome::kChromeUIScheme) &&
@@ skipping 12 matching lines @@
   Browser* browser = GetPopup();
 
   // Create new browser if no matching pop up is found.
   if (browser == NULL) {
     browser = Browser::CreateForApp(Browser::TYPE_PANEL, kActiveDownloadAppName,
                                     gfx::Rect(), profile);
 
     browser::NavigateParams params(
         browser,
         GURL(chrome::kChromeUIActiveDownloadsURL),
-        PageTransition::LINK);
+        content::PAGE_TRANSITION_LINK);
     params.disposition = NEW_FOREGROUND_TAB;
     browser::Navigate(&params);
 
     DCHECK_EQ(browser, params.browser);
     // TODO(beng): The following two calls should be automatic by Navigate().
     browser->window()->SetBounds(gfx::Rect(kPopupLeft,
                                            kPopupTop,
                                            kPopupWidth,
                                            kPopupHeight));
   }
@@ skipping 19 matching lines @@
       }
     }
   }
   return NULL;
 }
 #endif  // defined(TOUCH_UI)
 
 const ActiveDownloadsUI::DownloadList& ActiveDownloadsUI::GetDownloads() const {
   return handler_->downloads();
 }