Revert 266967 "Merge 266651 "linux-aura: Supports Compose key wi..."

Compile failure:
../../ui/events/x/events_x.cc: In function ‘int {anonymous}::GetEventFlagsFromXKeyEvent(XEvent*)’:
../../ui/events/x/events_x.cc:172:51: error: ‘IsKeypadKey’ was not declared in this scope

> Merge 266651 "linux-aura: Supports Compose key with XIM."
> 
> > linux-aura: Supports Compose key with XIM.
> > 
> > Supports Compose key with XIM and makes .XCompose settings effective with Linux Aura build.
> > 
> > BUG=351230,360388,349163
> > TEST=Done manually.  Tested with GTK_IM_MODULE=xim XMODIFIERS=@im=none and ~/.XCompose with custom contents.
> > R=erg@chromium.org, sadrul@chromium.org
> > 
> > Review URL: https://codereview.chromium.org/243143002
> 
> TBR=piman@chromium.org,yukishiino@chromium.org
> 
> Review URL: https://codereview.chromium.org/260573002

TBR=erg@chromium.org

Review URL: https://codereview.chromium.org/253183002

git-svn-id: svn://svn.chromium.org/chrome/branches/1916/src@266978 0039d316-1c4b-4281-b951-d872f2087c98
6 files changed