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

chrome/browser/download/download_request_limiter.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/download/download_request_limiter.h"
 
 #include "base/bind.h"
 #include "base/stl_util.h"
 #include "chrome/browser/download/download_request_infobar_delegate.h"
 #include "chrome/browser/infobars/infobar_tab_helper.h"
@@ skipping 96 matching lines @@
       // NOTE: resetting state on a pending navigate isn't ideal. In particular
       // it is possible that queued up downloads for the page before the
       // pending navigate will be delivered to us after we process this
       // request. If this happens we may let a download through that we
       // shouldn't have. But this is rather rare, and it is difficult to get
       // 100% right, so we don't deal with it.
       NavigationEntry* entry = controller_->pending_entry();
       if (!entry)
         return;
 
-      if (PageTransition::IsRedirect(entry->transition_type())) {
+      if (content::PageTransitionIsRedirect(entry->transition_type())) {
         // Redirects don't count.
         return;
       }
 
       if (status_ == DownloadRequestLimiter::ALLOW_ALL_DOWNLOADS ||
           status_ == DownloadRequestLimiter::DOWNLOADS_NOT_ALLOWED) {
         // User has either allowed all downloads or canceled all downloads. Only
         // reset the download state if the user is navigating to a different
         // host (or host is empty).
         if (!initial_page_host_.empty() && !entry->url().host().empty() &&
@@ skipping 203 matching lines @@
 
 void DownloadRequestLimiter::Remove(TabDownloadState* state) {
   DCHECK(ContainsKey(state_map_, state->controller()));
   state_map_.erase(state->controller());
   delete state;
 }
 
 // static
 DownloadRequestLimiter::TestingDelegate* DownloadRequestLimiter::delegate_ =
     NULL;