Add configuration_changed event and set_background_opacity request.

components/exo/shell_surface.h

 // Copyright 2015 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 COMPONENTS_EXO_SHELL_SURFACE_H_
 #define COMPONENTS_EXO_SHELL_SURFACE_H_
 
 #include <deque>
 #include <memory>
 #include <string>
 
 #include "ash/common/wm/window_state_observer.h"
+#include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/strings/string16.h"
 #include "components/exo/surface_delegate.h"
 #include "components/exo/surface_observer.h"
 #include "ui/aura/window_observer.h"
 #include "ui/base/hit_test.h"
 #include "ui/gfx/geometry/point.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/vector2d.h"
 #include "ui/views/widget/widget_delegate.h"
@@ skipping 117 matching lines @@
   void Close();
 
   // Set geometry for surface. The geometry represents the "visible bounds"
   // for the surface from the user's perspective.
   void SetGeometry(const gfx::Rect& geometry);
 
   // Set the content bounds for the shadow. Empty bounds will delete
   // the shadow.
   void SetRectangularShadow(const gfx::Rect& content_bounds);
 
+  // Set the pacity of the background for the window that has a shadow.
+  void SetBackgroundOpacity(float opacity);
+
   // Set scale factor for surface. The scale factor will be applied to surface
   // and all descendants.
   void SetScale(double scale);
 
   // Set top inset for surface.
   void SetTopInset(int height);
 
   // Sets the main surface for the window.
   static void SetMainSurface(aura::Window* window, Surface* surface);
 
@@ skipping 49 matching lines @@
   // Overridden from ui::EventHandler:
   void OnKeyEvent(ui::KeyEvent* event) override;
   void OnMouseEvent(ui::MouseEvent* event) override;
 
   // Overridden from ui::AcceleratorTarget:
   bool AcceleratorPressed(const ui::Accelerator& accelerator) override;
 
  private:
   class ScopedConfigure;
   class ScopedAnimationsDisabled;
+  FRIEND_TEST_ALL_PREFIXES(ShellSurfaceTest, ShadowStartMaximized);
 
   // Surface state associated with each configure request.
   struct Config {
     uint32_t serial;
     gfx::Vector2d origin_offset;
     int resize_component;
   };
 
   // Creates the |widget_| for |surface_|. |show_state| is the initial state
   // of the widget (e.g. maximized).
@@ skipping 52 matching lines @@
   int resize_component_ = HTCAPTION;  // HT constant (see ui/base/hit_test.h)
   int pending_resize_component_ = HTCAPTION;
   aura::Window* shadow_overlay_ = nullptr;
   aura::Window* shadow_underlay_ = nullptr;
   gfx::Rect shadow_content_bounds_;
   std::deque<Config> pending_configs_;
   std::unique_ptr<ash::WindowResizer> resizer_;
   std::unique_ptr<ScopedAnimationsDisabled> scoped_animations_disabled_;
   int top_inset_height_ = 0;
   int pending_top_inset_height_ = 0;
+  float background_opacity_ = 1.0;
 
   DISALLOW_COPY_AND_ASSIGN(ShellSurface);
 };
 
 }  // namespace exo
 
 #endif  // COMPONENTS_EXO_SHELL_SURFACE_H_