MacViews: Fix BrowserClient for toolkit-views on Mac

chrome/browser/ui/aura/chrome_browser_main_extra_parts_aura.h

Index: chrome/browser/ui/aura/chrome_browser_main_extra_parts_aura.h
diff --git a/chrome/browser/ui/aura/chrome_browser_main_extra_parts_aura.h b/chrome/browser/ui/aura/chrome_browser_main_extra_parts_aura.h
index 977bbbe67bc71950216a01e1f10e11b31b10dd68..1e706be55f5b37c380ddc6c596ee8f17f1f58e2c 100644
--- a/chrome/browser/ui/aura/chrome_browser_main_extra_parts_aura.h
+++ b/chrome/browser/ui/aura/chrome_browser_main_extra_parts_aura.h
@@ -12,6 +12,10 @@
 
 class ActiveDesktopMonitor;
 
+namespace wm {
+class WMState;
+}
+
 class ChromeBrowserMainExtraPartsAura : public ChromeBrowserMainExtraParts {
  public:
   ChromeBrowserMainExtraPartsAura();
@@ -31,6 +35,7 @@ class ChromeBrowserMainExtraPartsAura : public ChromeBrowserMainExtraParts {
   void DetectRunningAsRoot();
 #endif
 
+  scoped_ptr<wm::WMState> wm_state_;
   scoped_ptr<ActiveDesktopMonitor> active_desktop_monitor_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainExtraPartsAura);