Factor load notification detail structs out of NavigationController and into 
their own file in the |content| namespace. Remove un-necessary includes of
navigation_controller.h.

BUG=none
TEST=everything compiles
Review URL: http://codereview.chromium.org/7008018

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@87319 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/extensions/extension_tab_helper.h b/chrome/browser/extensions/extension_tab_helper.h
index 8a4b51e..9590e68 100644
--- a/chrome/browser/extensions/extension_tab_helper.h
+++ b/chrome/browser/extensions/extension_tab_helper.h
@@ -16,6 +16,10 @@
 class TabContentsWrapper;
 struct WebApplicationInfo;
 
+namespace content {
+struct LoadCommittedDetails;
+}
+
 // Per-tab extension helper. Also handles non-extension apps.
 class ExtensionTabHelper : public TabContentsObserver,
                            public ExtensionFunctionDispatcher::Delegate,
@@ -75,7 +79,7 @@
  private:
   // TabContentsObserver overrides.
   virtual void DidNavigateMainFramePostCommit(
-      const NavigationController::LoadCommittedDetails& details,
+      const content::LoadCommittedDetails& details,
       const ViewHostMsg_FrameNavigate_Params& params) OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message);