Revert of Move core web_view code to extensions.

extensions/browser/api/extensions_api_client.h

Index: extensions/browser/api/extensions_api_client.h
diff --git a/extensions/browser/api/extensions_api_client.h b/extensions/browser/api/extensions_api_client.h
index 4a60df57da21d79a77d40aab1570674b6177214c..93fae579b7c6b75d206283715654266a3627d0e6 100644
--- a/extensions/browser/api/extensions_api_client.h
+++ b/extensions/browser/api/extensions_api_client.h
@@ -26,10 +26,6 @@
 namespace extensions {
 
 class AppViewGuestDelegate;
-class WebViewGuest;
-class WebViewGuestDelegate;
-class WebViewPermissionHelper;
-class WebViewPermissionHelperDelegate;
 class SettingsObserver;
 class SettingsStorageFactory;
 class ValueStoreCache;
@@ -79,17 +75,6 @@
   // Returns the HidService instance for this embedder.
   virtual device::HidService* GetHidService();
 
-  // Returns a delegate for some of WebViewGuest's behavior. The caller owns the
-  // returned WebViewGuestDelegate.
-  virtual WebViewGuestDelegate* CreateWebViewGuestDelegate (
-      WebViewGuest* web_view_guest) const;
-
-  // Returns a delegate for some of WebViewPermissionHelper's behavior. The
-  // caller owns the returned WebViewPermissionHelperDelegate.
-  virtual WebViewPermissionHelperDelegate*
-      CreateWebViewPermissionHelperDelegate (
-          WebViewPermissionHelper* web_view_permission_helper) const;
-
   virtual void RegisterGuestViewTypes() {}
 
   // NOTE: If this interface gains too many methods (perhaps more than 20) it