Consolidate AppControllDelegate to ExtensionsDelegate

athena/extensions/public/extensions_delegate.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ATHENA_EXTENSIONS_PUBLIC_EXTENSIONS_DELEGATE_H_
 #define ATHENA_EXTENSIONS_PUBLIC_EXTENSIONS_DELEGATE_H_
 
 #include <string>
 
 #include "athena/athena_export.h"
 
 namespace content {
 class BrowserContext;
+class WebContents;
 }
 
 namespace extensions {
 class ExtensionSet;
 }
 
 namespace athena {
 
 // A delegate interface to extension implentation.
 class ATHENA_EXPORT ExtensionsDelegate {
@@ skipping 12 matching lines @@
   static void Shutdown();
 
   ExtensionsDelegate();
   virtual ~ExtensionsDelegate();
 
   virtual content::BrowserContext* GetBrowserContext() const = 0;
 
   // Returns the set of extensions that are currently installed.
   virtual const extensions::ExtensionSet& GetInstalledExtensions() = 0;
 
-  // Launch an application specified by |app_id|.
-  virtual void LaunchApp(const std::string& app_id) = 0;
+  // Starts an application. Returns true if the application was
+  // successfully started.
+  virtual bool LaunchApp(const std::string& app_id) = 0;
+
+  // Unload an application. Returns true if the application was
+  // successfully unloaded.
+  virtual bool UnloadApp(const std::string& app_id) = 0;
 };
 
 }  // namespace athena
 
 #endif  // ATHENA_EXTENSIONS_PUBLIC_EXTENSIONS_DELEGATE_H_