Introduces --app flag to athena to load an app.

athena/main/athena_main.cc

 // 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.
 
 #include "apps/shell/app/shell_main_delegate.h"
 #include "apps/shell/browser/shell_browser_main_delegate.h"
 #include "apps/shell/browser/shell_desktop_controller.h"
+#include "apps/shell/browser/shell_extension_system.h"
 #include "athena/content/public/content_activity_factory.h"
 #include "athena/main/athena_launcher.h"
 #include "athena/main/placeholder.h"
+#include "base/command_line.h"
+#include "base/file_util.h"
 #include "content/public/app/content_main.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/wm/core/visibility_controller.h"
 
+namespace {
+const std::string kAppSwitch = "app";
+}  // namespace
+
 class AthenaBrowserMainDelegate : public apps::ShellBrowserMainDelegate {
  public:
   AthenaBrowserMainDelegate() {}
   virtual ~AthenaBrowserMainDelegate() {}
 
   // apps::ShellBrowserMainDelegate:
   virtual void Start(content::BrowserContext* context) OVERRIDE {
     athena::StartAthena(
         apps::ShellDesktopController::instance()->host()->window(),
         new athena::ContentActivityFactory());
+    base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
+    if (command_line->HasSwitch(kAppSwitch)) {
+      base::FilePath app_dir(command_line->GetSwitchValueNative(kAppSwitch));
+      base::FilePath app_absolute_dir = base::MakeAbsoluteFilePath(app_dir);
+      extensions::ShellExtensionSystem* extension_system =
+          static_cast<extensions::ShellExtensionSystem*>(
+              extensions::ExtensionSystem::Get(context));
+      extension_system->LoadApp(app_absolute_dir);
+    }
     CreateTestPages(context);
   }
 
   virtual void Shutdown() OVERRIDE { athena::ShutdownAthena(); }
 
   virtual apps::ShellDesktopController* CreateDesktopController() OVERRIDE {
     // TODO(mukai): create Athena's own ShellDesktopController subclass so that
     // it can initialize its own window manager logic.
     return new apps::ShellDesktopController();
   }
@@ skipping 19 matching lines @@
 
 int main(int argc, const char** argv) {
   AthenaMainDelegate delegate;
   content::ContentMainParams params(&delegate);
 
   params.argc = argc;
   params.argv = argv;
 
   return content::ContentMain(params);
 }