Make sure the non browser/non app widget is fully visible when created on ash

ash/wm/window_state.h

 // Copyright 2013 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.
 
 #ifndef ASH_WM_WINDOW_STATE_H_
 #define ASH_WM_WINDOW_STATE_H_
 
 #include "ash/ash_export.h"
 #include "ash/wm/wm_types.h"
 #include "base/basictypes.h"
@@ skipping 130 matching lines @@
 
   // Sets/gets the flag to suppress the cross-fade animation for
   // the transition to the fullscreen state.
   bool animate_to_fullscreen() const {
     return animate_to_fullscreen_;
   }
   void set_animate_to_fullscreen(bool value) {
     animate_to_fullscreen_ = value;
   }
 
+  // If the minimum visibilty is true, ash will try to keep a
+  // minimum amount of the window is always visible on the work area
+  // when shown.
+  // TODO(oshima): Consolidate this and window_position_managed
+  // into single parameter to control the window placement.
+  bool minimum_visibility() const {
+    return minimum_visibility_;
+  }
+  void set_minimum_visibility(bool minimum_visibility) {
+    minimum_visibility_ = minimum_visibility;
+  }
+
   // Gets/Sets the bounds of the window before it was moved by the auto window
   // management. As long as it was not auto-managed, it will return NULL.
   const gfx::Rect* pre_auto_manage_window_bounds() const {
     return pre_auto_manage_window_bounds_.get();
   }
   void SetPreAutoManageWindowBounds(const gfx::Rect& bounds);
 
   // Layout related properties
 
   void AddObserver(WindowStateObserver* observer);
@@ skipping 94 matching lines @@
   bool panel_attached_;
   bool continue_drag_after_reparent_;
   bool ignored_by_shelf_;
   bool can_consume_system_keys_;
   bool top_row_keys_are_function_keys_;
   WindowResizer* window_resizer_;
 
   bool always_restores_to_restore_bounds_;
   bool hide_shelf_when_fullscreen_;
   bool animate_to_fullscreen_;
+  bool minimum_visibility_;
 
   // A property to remember the window position which was set before the
   // auto window position manager changed the window bounds, so that it can get
   // restored when only this one window gets shown.
   scoped_ptr<gfx::Rect> pre_auto_manage_window_bounds_;
 
   ObserverList<WindowStateObserver> observer_list_;
 
   WindowShowType window_show_type_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowState);
 };
 
 // Returns the WindowState for active window. Returns |NULL|
 // if there is no active window.
 ASH_EXPORT WindowState* GetActiveWindowState();
 
 // Returns the WindowState for |window|. Creates WindowState
 // if it didn't exist. The settings object is owned by |window|.
 ASH_EXPORT WindowState* GetWindowState(aura::Window* window);
 
 // const version of GetWindowState.
 ASH_EXPORT const WindowState*
 GetWindowState(const aura::Window* window);
 
 }  // namespace wm
 }  // namespace ash
 
 #endif  // ASH_WM_WINDOW_STATE_H_