Merge 168463 - [Mac] Prevent ppapi fullscreen window from dealloc while on stack.

content/browser/renderer_host/render_widget_host_view_mac.mm

Index: content/browser/renderer_host/render_widget_host_view_mac.mm
===================================================================
--- content/browser/renderer_host/render_widget_host_view_mac.mm	(revision 170033)
+++ content/browser/renderer_host/render_widget_host_view_mac.mm	(working copy)
@@ -720,8 +720,12 @@
   [fullscreen_window_manager_ exitFullscreenMode];
   fullscreen_window_manager_.reset();
   [pepper_fullscreen_window_ close];
-  pepper_fullscreen_window_.reset();
 
+  // This can be called as part of processing the window's responder
+  // chain, for instance |-performKeyEquivalent:|.  In that case the
+  // object needs to survive until the stack unwinds.
+  pepper_fullscreen_window_.autorelease();
+
   // We get this call just before |render_widget_host_| deletes
   // itself.  But we are owned by |cocoa_view_|, which may be retained
   // by some other code.  Examples are WebContentsViewMac's