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

chrome/browser/tab_contents/insecure_content_infobar_delegate.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/tab_contents/insecure_content_infobar_delegate.h"
 
 #include "base/metrics/histogram.h"
 #include "chrome/browser/google/google_util.h"
 #include "chrome/browser/infobars/infobar_tab_helper.h"
 #include "chrome/common/render_messages.h"
 #include "content/browser/tab_contents/tab_contents.h"
-#include "content/common/page_transition_types.h"
+#include "content/public/common/page_transition_types.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
 InsecureContentInfoBarDelegate::InsecureContentInfoBarDelegate(
     InfoBarTabHelper* infobar_helper,
     InfoBarType type)
     : ConfirmInfoBarDelegate(infobar_helper),
       type_(type) {
   UMA_HISTOGRAM_ENUMERATION("InsecureContentInfoBarDelegateV2",
       (type_ == DISPLAY) ? DISPLAY_INFOBAR_SHOWN : RUN_INFOBAR_SHOWN,
@@ skipping 52 matching lines @@
 string16 InsecureContentInfoBarDelegate::GetLinkText() const {
   return l10n_util::GetStringUTF16(IDS_LEARN_MORE);
 }
 
 bool InsecureContentInfoBarDelegate::LinkClicked(
     WindowOpenDisposition disposition) {
   owner()->tab_contents()->OpenURL(
       google_util::AppendGoogleLocaleParam(GURL(
       "https://www.google.com/support/chrome/bin/answer.py?answer=1342714")),
       GURL(), (disposition == CURRENT_TAB) ? NEW_FOREGROUND_TAB : disposition,
-      PageTransition::LINK);
+      content::PAGE_TRANSITION_LINK);
   return false;
 }