Moving app_view 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 a0fff44d04b940452a1c6f3d3a2c16c05af3f403..1e0c6d53ee32d93f9696d6f7816a18f63fd5791f 100644
--- a/extensions/browser/api/extensions_api_client.cc
+++ b/extensions/browser/api/extensions_api_client.cc
@@ -7,10 +7,10 @@
 #include "base/logging.h"
 
 namespace extensions {
-namespace {
+class AppViewGuestDelegate;
 
+namespace {
 ExtensionsAPIClient* g_instance = NULL;
-
 }  // namespace
 
 ExtensionsAPIClient::ExtensionsAPIClient() { g_instance = this; }
@@ -41,6 +41,10 @@ bool ExtensionsAPIClient::AppViewInternalDenyRequest(
   return false;
 }
 
+AppViewGuestDelegate* ExtensionsAPIClient::CreateAppViewGuestDelegate() const {
+  return NULL;
+}
+
 device::HidService* ExtensionsAPIClient::GetHidService() {
   // This should never be called by clients which don't support the HID API.
   NOTIMPLEMENTED();