Rename TabContents::controller() to GetController and put it into the WebContents interface.

chrome/browser/ui/blocked_content/blocked_content_tab_helper.cc

Index: chrome/browser/ui/blocked_content/blocked_content_tab_helper.cc
===================================================================
--- chrome/browser/ui/blocked_content/blocked_content_tab_helper.cc	(revision 115228)
+++ chrome/browser/ui/blocked_content/blocked_content_tab_helper.cc	(working copy)
@@ -80,7 +80,8 @@
   // entry is the page to be loaded as we navigate away from the unloading
   // page.  For this reason, we can't use GetURL() to get the opener URL,
   // because it returns the active entry.
-  NavigationEntry* entry = tab_contents()->controller().GetLastCommittedEntry();
+  NavigationEntry* entry =
+      tab_contents()->GetController().GetLastCommittedEntry();
   GURL creator = entry ? entry->virtual_url() : GURL::EmptyGURL();
   Profile* profile =
       Profile::FromBrowserContext(tab_contents()->browser_context());