Allow app_shell to run past extension manifest parsing

apps/shell/shell_browser_main_parts.h

Index: apps/shell/shell_browser_main_parts.h
diff --git a/apps/shell/shell_browser_main_parts.h b/apps/shell/shell_browser_main_parts.h
index 2d02cacf486e276f3bb4f63473cf72676cbc9512..a1fdba365d69900a551194b1cedc8ea7133a64b3 100644
--- a/apps/shell/shell_browser_main_parts.h
+++ b/apps/shell/shell_browser_main_parts.h
@@ -15,10 +15,6 @@ namespace aura {
 class TestScreen;
 }
 
-namespace base {
-class FilePath;
-}
-
 namespace content {
 class ShellBrowserContext;
 struct MainFunctionParams;
@@ -73,10 +69,6 @@ class ShellBrowserMainParts : public content::BrowserMainParts,
   // Creates and initializes the ExtensionSystem.
   void CreateExtensionSystem();
 
-  // Loads an unpacked application from a directory and attempts to launch it.
-  // Returns true on success.
-  bool LoadAndLaunchApp(const base::FilePath& app_dir);
-
   scoped_ptr<ShellBrowserContext> browser_context_;
   scoped_ptr<ShellExtensionsClient> extensions_client_;
   scoped_ptr<ShellExtensionsBrowserClient> extensions_browser_client_;