chromium 鼠标双击关闭标签

1、在 ..\src\ui\base\events\event.h 里面添加鼠标双击判断事件

bool IsRightMouseDoubleClick() const {
	return (flags() & EF_IS_DOUBLE_CLICK) != 0;
  }

2、在..\src\chrome\browser\ui\views\tabs\tab.cc

bool Tab::OnMousePressed(const ui::MouseEvent& event) {
  if (!controller())
    return false;

  controller()->OnMouseEventInTab(this, event);
  // add by acai 2014-07-01
  if (event.IsRightMouseDoubleClick()){
	Tab* closest_tab = controller()->GetTabAt(this, event.location());
    if (closest_tab){
        controller()->CloseTab(closest_tab, CLOSE_TAB_FROM_MOUSE);
		return true;
	}
  }// end add by acai
  // Allow a right click from touch to drag, which corresponds to a long click.
  if (event.IsOnlyLeftMouseButton() ||
      (event.IsOnlyRightMouseButton() && event.flags() & ui::EF_FROM_TOUCH)) {
    ui::ListSelectionModel original_selection;
    original_selection.Copy(controller()->GetSelectionModel());
    // Changing the selection may cause our bounds to change. If that happens
    // the location of the event may no longer be valid. Create a copy of the
    // event in the parents coordinate, which won't change, and recreate an
    // event after changing so the coordinates are correct.
    ui::MouseEvent event_in_parent(event, static_cast(this), parent());
    if (controller()->SupportsMultipleSelection()) {
      if (event.IsShiftDown() && event.IsControlDown()) {
        controller()->AddSelectionFromAnchorTo(this);
      } else if (event.IsShiftDown()) {
        controller()->ExtendSelectionTo(this);
      } else if (event.IsControlDown()) {
        controller()->ToggleSelected(this);
        if (!IsSelected()) {
          // Don't allow dragging non-selected tabs.
          return false;
        }
      } else if (!IsSelected()) {
        controller()->SelectTab(this);
      }
    } else if (!IsSelected()) {
      controller()->SelectTab(this);
    }
    ui::MouseEvent cloned_event(event_in_parent, parent(),
                                static_cast(this));
    controller()->MaybeStartDrag(this, cloned_event, original_selection);
  }
  return true;
}

OK,搞定。。。