GitLab

XK_ISO_Level3_Latch key was treated as a character key.  This CL treats the key as same as AltGr (XK_ISO_Level3_Shift).

Note: Apostrophe key in Latvian keyboard layout (apostrophe variant) is assigned to XK_ISO_Level3_Latch.

BUG=375670
TEST=Done manually.

Review URL: https://codereview.chromium.org/321153002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@278646 0039d316-1c4b-4281-b951-d872f2087c98