Fix HidService lifetime issues

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 e797212a11afcc3823975cd37a5f6b6f63f90b59..471e2b1e8eb7270fe464268efb32049c020bb954 100644
--- a/extensions/browser/api/extensions_api_client.cc
+++ b/extensions/browser/api/extensions_api_client.cc
@@ -30,12 +30,6 @@ 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();
-  return NULL;
-}
-
 WebViewGuestDelegate* ExtensionsAPIClient::CreateWebViewGuestDelegate(
     WebViewGuest* web_view_guest) const {
   return NULL;