Window prerequisites for ShelfWindowWatcher panel support.

components/exo/shell_surface.h

Index: components/exo/shell_surface.h
diff --git a/components/exo/shell_surface.h b/components/exo/shell_surface.h
index 511a57cbffbca9a94e54b96981da226680a6334b..50812956af9580d53e0db3261b9d2eb5fd1e5784 100644
--- a/components/exo/shell_surface.h
+++ b/components/exo/shell_surface.h
@@ -124,13 +124,9 @@ class ShellSurface : public SurfaceDelegate,
 
   // Sets the application ID for the window. The application ID identifies the
   // general class of applications to which the window belongs.
-  static void SetApplicationId(aura::Window* window,
-                               std::string* application_id);
+  static void SetApplicationId(aura::Window* window, const std::string& id);
   static const std::string GetApplicationId(aura::Window* window);
 
-  // Set application id for surface.
-  void SetApplicationId(const std::string& application_id);

[reveman, 2016/11/05 01:25:52]

nit: can you keep this non-static function around? I prefer having a
ShellSurface API that is as close as possible to the wayland shell surface
interface and not having to deal with things like widgets in the wayland code if
possible.

[msw, 2016/11/05 23:12:08]

Done.

-
   // Start an interactive move of surface.
   void Move();
 
@@ -275,7 +271,6 @@ class ShellSurface : public SurfaceDelegate,
   const int container_;
   bool pending_show_widget_ = false;
   base::string16 title_;
-  std::string application_id_;
   gfx::Rect geometry_;
   gfx::Rect pending_geometry_;
   double scale_ = 1.0;