Show focus rect on Chrome menu button

When the Chrome hotdog menu button is focused by pressing Alt-Shift-T or F6 on
Windows/ChromeOS and tabbing over to itr, show the rectangular focus indicator.

BUG=320759

Review URL: https://codereview.chromium.org/83513004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238233 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/ui/views/toolbar/wrench_toolbar_button.cc

@@ -34,6 +34,7 @@ void WrenchToolbarButton::OnPaint(gfx::Canvas* canvas) {
 
   wrench_icon_painter_->Paint(
       canvas, GetThemeProvider(), gfx::Rect(size()), GetCurrentBezelType());
+  OnPaintFocusBorder(canvas);
 }
 
 void WrenchToolbarButton::ScheduleWrenchIconPaint() {