Adds HotwordPrivate API for integrating the hotword feature to AppLauncher

chrome/browser/extensions/api/hotword_private/hotword_private_api.h

Index: chrome/browser/extensions/api/hotword_private/hotword_private_api.h
diff --git a/chrome/browser/extensions/api/hotword_private/hotword_private_api.h b/chrome/browser/extensions/api/hotword_private/hotword_private_api.h
index bd0750160924e07257f61c3da9f13f696713303c..0a409f43449232fe79e0c7be136218242c24529d 100644
--- a/chrome/browser/extensions/api/hotword_private/hotword_private_api.h
+++ b/chrome/browser/extensions/api/hotword_private/hotword_private_api.h
@@ -30,10 +30,14 @@ class HotwordPrivateEventService : public BrowserContextKeyedAPI {
 
   void OnEnabledChanged(const std::string& pref_name);
 
+  void OnHotwordSessionRequested();
+
+  void OnHotwordSessionStopped();
+
  private:
   friend class BrowserContextKeyedAPIFactory<HotwordPrivateEventService>;
 
-  void SignalEvent();
+  void SignalEvent(const std::string& event_name);
 
   Profile* profile_;
   PrefChangeRegistrar pref_change_registrar_;
@@ -77,6 +81,32 @@ class HotwordPrivateGetStatusFunction : public ChromeSyncExtensionFunction {
   virtual bool RunSync() OVERRIDE;
 };
 
+class HotwordPrivateSetHotwordSessionStateFunction
+    : public ChromeSyncExtensionFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION("hotwordPrivate.setHotwordSessionState",
+                             HOTWORDPRIVATE_SETHOTWORDSESSIONSTATE);
+
+ protected:
+  virtual ~HotwordPrivateSetHotwordSessionStateFunction() {}
+
+  // ExtensionFunction:
+  virtual bool RunSync() OVERRIDE;
+};
+
+class HotwordPrivateNotifyHotwordRecognitionFunction
+    : public ChromeSyncExtensionFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION("hotwordPrivate.notifyHotwordRecognition",
+                             HOTWORDPRIVATE_NOTIFYHOTWORDRECOGNITION);
+
+ protected:
+  virtual ~HotwordPrivateNotifyHotwordRecognitionFunction() {}
+
+  // ExtensionFunction:
+  virtual bool RunSync() OVERRIDE;
+};
+
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_HOTWORD_PRIVATE_HOTWORD_PRIVATE_API_H_