Convert WebContents to return a content::NavigationController instead of the implementation. Update all the headers in chrome to use the interface only. In a subsequent cl, I'll rename the implementation to NavigationControllerImpl and also get rid of content::NavigationController everywhere.

BUG=98716
TBR=joi
Review URL: http://codereview.chromium.org/8983010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@116244 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/printing/print_dialog_cloud.cc b/chrome/browser/printing/print_dialog_cloud.cc
index afa4c16..bdb3ad3 100644
--- a/chrome/browser/printing/print_dialog_cloud.cc
+++ b/chrome/browser/printing/print_dialog_cloud.cc
@@ -28,10 +28,10 @@
 #include "chrome/common/print_messages.h"
 #include "chrome/common/url_constants.h"
 #include "content/browser/renderer_host/render_view_host.h"
-#include "content/browser/tab_contents/navigation_controller.h"
 #include "content/browser/tab_contents/tab_contents_view.h"
 #include "content/browser/webui/web_ui.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_source.h"
@@ -303,7 +303,8 @@
   // Register for appropriate notifications, and re-direct the URL
   // to the real server URL, now that we've gotten an HTML dialog
   // going.
-  NavigationController* controller = &web_ui()->web_contents()->GetController();
+  content::NavigationController* controller =
+      &web_ui()->web_contents()->GetController();
   NavigationEntry* pending_entry = controller->GetPendingEntry();
   if (pending_entry) {
     Profile* profile = Profile::FromWebUI(web_ui());