Use Helvetica rather than Arial for badging on the Mac.

BUG=http://crbug.com/21458
TEST=when badging comes to the Mac, make sure it uses Helvetica.

Review URL: http://codereview.chromium.org/328033

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@30189 0039d316-1c4b-4281-b951-d872f2087c98

chrome/common/extensions/extension_action.cc

@@ -62,7 +62,12 @@ void ExtensionAction::PaintBadge(gfx::Canvas* canvas,
 
   canvas->save();
 
+#if defined(OS_MACOSX)
+  SkTypeface* typeface =
+      SkTypeface::CreateFromName("Helvetica", SkTypeface::kBold);
+#else
   SkTypeface* typeface = SkTypeface::CreateFromName("Arial", SkTypeface::kBold);
+#endif
   SkPaint text_paint;
   text_paint.setAntiAlias(true);
   text_paint.setColor(text_color);