Start app shim when app launched.

apps/app_shim/extension_app_shim_handler_mac.h

Index: apps/app_shim/extension_app_shim_handler_mac.h
diff --git a/apps/app_shim/extension_app_shim_handler_mac.h b/apps/app_shim/extension_app_shim_handler_mac.h
index ea9a8c7eeea8eb945dd11429f242b006dd21777b..2b10c274cac1f311c6ec23b00022b667f66dbb38 100644
--- a/apps/app_shim/extension_app_shim_handler_mac.h
+++ b/apps/app_shim/extension_app_shim_handler_mac.h
@@ -14,6 +14,10 @@
 
 class Profile;
 
+namespace extensions {
+class Extension;
+}
+
 namespace apps {
 
 // This app shim handler that handles events for app shims that correspond to an
@@ -25,7 +29,7 @@ class ExtensionAppShimHandler : public AppShimHandler,
   virtual ~ExtensionAppShimHandler();
 
   // AppShimHandler overrides:
-  virtual bool OnShimLaunch(Host* host) OVERRIDE;
+  virtual bool OnShimLaunch(Host* host, bool launch_now) OVERRIDE;
   virtual void OnShimClose(Host* host) OVERRIDE;
   virtual void OnShimFocus(Host* host) OVERRIDE;
 
@@ -38,7 +42,9 @@ class ExtensionAppShimHandler : public AppShimHandler,
   content::NotificationRegistrar& registrar() { return registrar_; }
 
  private:
-  virtual bool LaunchApp(Profile* profile, const std::string& app_id);
+  virtual bool LaunchApp(Profile* profile,
+                         const std::string& app_id,
+                         bool launch_now);
 
   // Listen to the NOTIFICATION_EXTENSION_HOST_DESTROYED message to detect when
   // an app closes. When that happens, call OnAppClosed on the relevant
@@ -48,6 +54,8 @@ class ExtensionAppShimHandler : public AppShimHandler,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
+  void StartShim(Profile* profile, const extensions::Extension* extension);
+
   void CloseShim(Profile* profile, const std::string& app_id);
 
   HostMap hosts_;