Remove dependencies in GuestViewManager.

chrome/browser/guest_view/guest_view_manager.h

Index: chrome/browser/guest_view/guest_view_manager.h
diff --git a/chrome/browser/guest_view/guest_view_manager.h b/chrome/browser/guest_view/guest_view_manager.h
index bf46ae9e3b6e085939d6d2ab0996ac9fb2067811..c908d44fdf8876e403c49ae5e55d7959a0684459 100644
--- a/chrome/browser/guest_view/guest_view_manager.h
+++ b/chrome/browser/guest_view/guest_view_manager.h
@@ -14,7 +14,6 @@
 #include "content/public/browser/site_instance.h"
 #include "content/public/browser/web_contents.h"
 
-class AppViewGuest;
 class GuestViewBase;
 class GuestViewManagerFactory;
 class GURL;
@@ -23,10 +22,6 @@ namespace content {
 class BrowserContext;
 }  // namespace content
 
-namespace guestview {
-class TestGuestViewManager;
-}  // namespace guestview
-
 class GuestViewManager : public content::BrowserPluginGuestManager,
                          public base::SupportsUserData::Data {
  public:
@@ -78,9 +73,7 @@ class GuestViewManager : public content::BrowserPluginGuestManager,
                             const GuestCallback& callback) OVERRIDE;
 
  protected:
-  friend class AppViewGuest;
   friend class GuestViewBase;
-  friend class guestview::TestGuestViewManager;
   FRIEND_TEST_ALL_PREFIXES(GuestViewManagerTest, AddRemove);
 
   // Can be overriden in tests.