Don't use evdev except for target

libevdev-cros is not needed for the host tooling, and is not availale for
the host in a chroot chromeos building environment.

BUG=527996

Review URL: https://codereview.chromium.org/1322343002

Cr-Original-Commit-Position: refs/heads/master@{#347531}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 97739b5fcf32a746c38d8142bff56d0072953dbf

config/linux/BUILD.gn

@@ -60,16 +60,6 @@ pkg_config("dbus") {
   packages = [ "dbus-1" ]
 }
 
-if (use_evdev_gestures) {
-  pkg_config("libevdev-cros") {
-    packages = [ "libevdev-cros" ]
-  }
-
-  pkg_config("libgestures") {
-    packages = [ "libgestures" ]
-  }
-}
-
 config("x11") {
   libs = [
     "X11",

config/ui.gni

@@ -23,9 +23,6 @@ declare_args() {
   # that does not require X11.
   use_ozone = false
 
-  # Support ChromeOS touchpad gestures with ozone.
-  use_evdev_gestures = false
-
   # Indicates if Aura is enabled. Aura is a low-level windowing library, sort
   # of a replacement for GDI or GTK.
   use_aura = is_win || is_linux
@@ -67,8 +64,6 @@ if (is_linux && use_glib) {
 # Whether to use atk, the Accessibility ToolKit library
 use_atk = is_desktop_linux && use_x11
 
-use_ozone_evdev = use_ozone
-
 use_clipboard_aurax11 = is_linux && use_aura && use_x11
 
 enable_hidpi = is_mac || is_win || is_linux