Add js api for hosted/pacakged apps to request notification authorization

chrome/renderer/extensions/chrome_app_bindings.h

Index: chrome/renderer/extensions/chrome_app_bindings.h
diff --git a/chrome/renderer/extensions/chrome_app_bindings.h b/chrome/renderer/extensions/chrome_app_bindings.h
index 8e7da1b9b8ab1c591e9ea8bd9009f951a2a0f96d..5bb0fb8a503c07afe96b0f13c90bcf80787e6874 100644
--- a/chrome/renderer/extensions/chrome_app_bindings.h
+++ b/chrome/renderer/extensions/chrome_app_bindings.h
@@ -12,6 +12,8 @@
 #define CHROME_RENDERER_EXTENSIONS_CHROME_APP_BINDINGS_H_
 #pragma once
 
+#include <string>
+
 class ExtensionDispatcher;
 
 namespace v8 {
@@ -23,6 +25,8 @@ namespace extensions_v8 {
 class ChromeAppExtension {
  public:
   static v8::Extension* Get(ExtensionDispatcher* extension_dispatcher);
+  static void HandleGetAppNotifyChannelResponse(
+      int request_id, const std::string& channel_id, const std::string& error);
 };
 
 }  // namespace extensions_v8