Allow --disable-touch-adjustment on Android

BUG=417534

Review URL: https://codereview.chromium.org/604893002

Cr-Commit-Position: refs/heads/master@{#296743}

chrome/browser/about_flags.cc

@@ -887,7 +887,7 @@ const Experiment kExperiments[] = {
     "disable-touch-adjustment",
     IDS_DISABLE_TOUCH_ADJUSTMENT_NAME,
     IDS_DISABLE_TOUCH_ADJUSTMENT_DESCRIPTION,
-    kOsWin | kOsLinux | kOsCrOS,
+    kOsWin | kOsLinux | kOsCrOS | kOsAndroid,
     SINGLE_VALUE_TYPE(switches::kDisableTouchAdjustment)
   },
 #if defined(OS_CHROMEOS)