[mac] Implement {frame: 'none'} app window on Mac.

content/public/browser/web_contents_view.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 CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 99 matching lines @@
   // If we close the tab while a UI control is in an event-tracking
   // loop, the control may message freed objects and crash.
   // WebContents::Close() calls IsEventTracking(), and if it returns
   // true CloseTabAfterEventTracking() is called and the close is not
   // completed.
   virtual bool IsEventTracking() const = 0;
   virtual void CloseTabAfterEventTracking() = 0;
 
   // Get the bounds of the View, relative to the parent.
   virtual gfx::Rect GetViewBounds() const = 0;
+
+#if defined(OS_MACOSX)
+  virtual void SetMouseDownCanMoveWindow(bool can_move) = 0;

[jam, 2012/07/25 01:27:15]

the event tracking functions right above are only there for mac, and are empty
for other platforms. probably best to copy that pattern

[jeremya, 2012/07/25 03:15:59]

Hm, it seems misleading to have a method exist on platforms where it makes no
sense.

Since this is really just a hack to get the WebContentsView to respond in a
particular way to the -[NSView mouseDownCanMoveWindow] message, perhaps I should
just cast the NSView down to (id) and send it the message directly instead of
defining a new method on WebContentsView.

+#endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_H_