Revert 215753 "Move native_app_window code to apps areas"

trunk/src/apps/shell_window.h

Index: trunk/src/apps/shell_window.h
===================================================================
--- trunk/src/apps/shell_window.h	(revision 215780)
+++ trunk/src/apps/shell_window.h	(working copy)
@@ -21,6 +21,7 @@
 
 class GURL;
 class Profile;
+class NativeAppWindow;
 class SkRegion;
 
 namespace content {
@@ -41,8 +42,6 @@
 
 namespace apps {
 
-class NativeAppWindow;
-
 // Manages the web contents for Shell Windows. The implementation for this
 // class should create and maintain the WebContents for the window, and handle
 // any message passing between the web contents and the extension system or
@@ -131,9 +130,6 @@
 
     // General initialization.
     virtual void InitWebContents(content::WebContents* web_contents) = 0;
-    virtual NativeAppWindow* CreateNativeAppWindow(
-        ShellWindow* window,
-        const CreateParams& params) = 0;
 
     // Link handling.
     virtual content::WebContents* OpenURLFromTab(