Draggable region support for frameless app window on Mac.

chrome/browser/ui/cocoa/extensions/shell_window_cocoa.h

 // Copyright (c) 2012 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 CHROME_BROWSER_UI_COCOA_EXTENSIONS_SHELL_WINDOW_COCOA_H_
 #define CHROME_BROWSER_UI_COCOA_EXTENSIONS_SHELL_WINDOW_COCOA_H_
 
 #import <Cocoa/Cocoa.h>
+#include <vector>
 
 #include "base/memory/scoped_nsobject.h"
 #include "chrome/browser/ui/extensions/shell_window.h"
+#include "chrome/common/extensions/draggable_region.h"
 #include "ui/gfx/rect.h"
 
 class Profile;
 class ShellWindowCocoa;
 
 // A window controller for a minimal window to host a web app view. Passes
 // Objective-C notifications to the C++ bridge.
 @interface ShellWindowController : NSWindowController<NSWindowDelegate> {
  @private
   ShellWindowCocoa* shellWindow_; // Weak; owns self.
@@ skipping 41 matching lines @@
   void WindowDidResignKey();
 
  protected:
   // ShellWindow implementation.
   virtual void SetFullscreen(bool fullscreen) OVERRIDE;
   virtual bool IsFullscreenOrPending() const OVERRIDE;
 
  private:
   virtual ~ShellWindowCocoa();
 
+  // ShellWindow implementation.
+  virtual void UpdateDraggableRegions(
+      const std::vector<extensions::DraggableRegion>& regions) OVERRIDE;
+
   NSWindow* window() const;
 
   void InstallView();
   void UninstallView();
+  void InstallDraggableRegionViews();
 
   bool has_frame_;
 
   bool is_fullscreen_;
   NSRect restored_bounds_;
 
   scoped_nsobject<ShellWindowController> window_controller_;
   NSInteger attention_request_id_;  // identifier from requestUserAttention
 
+  std::vector<extensions::DraggableRegion> draggable_regions_;
+
   DISALLOW_COPY_AND_ASSIGN(ShellWindowCocoa);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_EXTENSIONS_SHELL_WINDOW_COCOA_H_