Revert of Move core web_view code to extensions.

extensions/browser/api/extensions_api_client.cc

Index: extensions/browser/api/extensions_api_client.cc
diff --git a/extensions/browser/api/extensions_api_client.cc b/extensions/browser/api/extensions_api_client.cc
index b75428d2322065672de7ea33d5c413c8b496073f..1e0c6d53ee32d93f9696d6f7816a18f63fd5791f 100644
--- a/extensions/browser/api/extensions_api_client.cc
+++ b/extensions/browser/api/extensions_api_client.cc
@@ -51,15 +51,4 @@
   return NULL;
 }
 
-WebViewGuestDelegate* ExtensionsAPIClient::CreateWebViewGuestDelegate(
-    WebViewGuest* web_view_guest) const {
-  return NULL;
-}
-
-WebViewPermissionHelperDelegate* ExtensionsAPIClient::
-    CreateWebViewPermissionHelperDelegate(
-        WebViewPermissionHelper* web_view_permission_helper) const {
-  return NULL;
-}
-
 }  // namespace extensions