Only maximize on double left click.

BUG=115514
TEST=Double middle or right click on the window title bar. The window should no longer maximize.

Review URL: https://chromiumcodereview.appspot.com/9555001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@124409 0039d316-1c4b-4281-b951-d872f2087c98

ash/wm/toplevel_window_event_filter.cc

@@ -58,7 +58,9 @@ bool ToplevelWindowEventFilter::PreHandleMouseEvent(aura::Window* target,
       } else {
         window_resizer_.reset();
       }
-      if (component == HTCAPTION && event->flags() & ui::EF_IS_DOUBLE_CLICK)
+      if (component == HTCAPTION &&
+          event->flags() & ui::EF_IS_DOUBLE_CLICK &&
+          event->flags() & ui::EF_LEFT_MOUSE_BUTTON)
         ToggleMaximizedState(target);
       return WindowResizer::GetBoundsChangeForWindowComponent(component) != 0;
     }