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

chrome/browser/external_tab_container_win.h

Index: chrome/browser/external_tab_container_win.h
===================================================================
--- chrome/browser/external_tab_container_win.h	(revision 105162)
+++ chrome/browser/external_tab_container_win.h	(working copy)
@@ -119,12 +119,13 @@
 
   // Deprecated. Please used two-arguments variant.
   // TODO(adriansc): Remove method once refactoring changed all call sites.
+  virtual TabContents* OpenURLFromTab(
+      TabContents* source,
+      const GURL& url,
+      const GURL& referrer,
+      WindowOpenDisposition disposition,
+      content::PageTransition transition) OVERRIDE;
   virtual TabContents* OpenURLFromTab(TabContents* source,
-                                      const GURL& url,
-                                      const GURL& referrer,
-                                      WindowOpenDisposition disposition,
-                                      PageTransition::Type transition) OVERRIDE;
-  virtual TabContents* OpenURLFromTab(TabContents* source,
                                       const OpenURLParams& params) OVERRIDE;
   virtual void NavigationStateChanged(const TabContents* source,
                                       unsigned changed_flags);
@@ -373,10 +374,11 @@
 
   // Deprecated. Please use the two-argument variant.
   // TODO(adriansc): Remove method once refactoring changed all call sites.
-  virtual TabContents* OpenURLFromTab(TabContents* source, const GURL& url,
-                                      const GURL& referrer,
-                                      WindowOpenDisposition disposition,
-                                      PageTransition::Type transition) OVERRIDE;
+  virtual TabContents* OpenURLFromTab(
+      TabContents* source, const GURL& url,
+      const GURL& referrer,
+      WindowOpenDisposition disposition,
+      content::PageTransition transition) OVERRIDE;
   virtual TabContents* OpenURLFromTab(TabContents* source,
                                       const OpenURLParams& params) OVERRIDE;