Remove app_shell chrome.shell API and ShellAppWindow

extensions/shell/browser/desktop_controller.h

Index: extensions/shell/browser/desktop_controller.h
diff --git a/extensions/shell/browser/desktop_controller.h b/extensions/shell/browser/desktop_controller.h
index 14d541f9e3cf24239ab554bb983ad6f4a9632d7b..116d692a6cb6b35f9e4674576d17f685b9f1d505 100644
--- a/extensions/shell/browser/desktop_controller.h
+++ b/extensions/shell/browser/desktop_controller.h
@@ -21,8 +21,9 @@ class ShellAppWindow;
 
 // DesktopController is an interface to construct the window environment in
 // extensions shell. ShellDesktopController provides a default implementation
-// for
-// app_shell, and embedder (such as athena) can provide its own.
+// for app_shell, and embedder (such as athena) can provide its own.
+// TODO(jamescook|oshima): Clean up this interface now that there is only one
+// way to create an app window.
 class DesktopController {
  public:
   DesktopController();
@@ -36,12 +37,6 @@ class DesktopController {
   // Returns the WindowTreeHost created by this DesktopController.
   virtual aura::WindowTreeHost* GetHost() = 0;
 
-  // Creates a new ShellAppWindow and adds it to the desktop. The desktop
-  // maintains ownership of the window. The window must be closed before
-  // |extension| is destroyed.
-  virtual ShellAppWindow* CreateShellAppWindow(content::BrowserContext* context,
-                                               const Extension* extension) = 0;
-
   // Creates a new app window and adds it to the desktop. The desktop maintains
   // ownership of the window. The window must be closed before |extension| is
   // destroyed.
@@ -55,6 +50,6 @@ class DesktopController {
   virtual void CloseAppWindows() = 0;
 };
 
-}  // namespace extensinos
+}  // namespace extensions
 
 #endif  // EXTENSIONS_SHELL_BROWSER_DESKTOP_CONTROLLER_H_