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

chrome/browser/ui/search_engines/search_engine_tab_helper.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/search_engines/search_engine_tab_helper.h"
 
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/search_engines/template_url.h"
 #include "chrome/browser/search_engines/template_url_fetcher.h"
 #include "chrome/browser/search_engines/template_url_service.h"
 #include "chrome/browser/search_engines/template_url_service_factory.h"
 #include "chrome/browser/ui/search_engines/template_url_fetcher_ui_callbacks.h"
 #include "chrome/common/render_messages.h"
 #include "content/common/view_messages.h"
 #include "content/browser/tab_contents/tab_contents.h"
 
 namespace {
 
 // Returns true if the entry's transition type is FORM_SUBMIT.
 bool IsFormSubmit(const NavigationEntry* entry) {
-  return (PageTransition::StripQualifier(entry->transition_type()) ==
-          PageTransition::FORM_SUBMIT);
+  return (content::PageTransitionStripQualifier(entry->transition_type()) ==
+          content::PAGE_TRANSITION_FORM_SUBMIT);
 }
 
 }  // namespace
 
 SearchEngineTabHelper::SearchEngineTabHelper(TabContents* tab_contents)
     : TabContentsObserver(tab_contents) {
   DCHECK(tab_contents);
 }
 
 SearchEngineTabHelper::~SearchEngineTabHelper() {
@@ skipping 163 matching lines @@
     // The favicon url isn't valid. This means there really isn't a favicon,
     // or the favicon url wasn't obtained before the load started. This assumes
     // the later.
     // TODO(sky): Need a way to set the favicon that doesn't involve generating
     // its url.
     new_url->SetFaviconURL(TemplateURL::GenerateFaviconURL(params.referrer));
   }
   new_url->set_safe_for_autoreplace(true);
   url_service->Add(new_url);
 }