Disable pinch-to-zoom gesture on virtual keyboard

ui/keyboard/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//testing/test.gni")
 import("//third_party/google_input_tools/closure.gni")
 import("//third_party/google_input_tools/inputview.gni")
 import("//tools/grit/grit_rule.gni")
 
 component("keyboard") {
   sources = [
     "keyboard_controller.cc",
     "keyboard_controller.h",
     "keyboard_controller_observer.h",
+    "keyboard_event_filter.cc",
+    "keyboard_event_filter.h",
     "keyboard_export.h",
     "keyboard_layout_delegate.h",
     "keyboard_layout_manager.cc",
     "keyboard_layout_manager.h",
     "keyboard_switches.cc",
     "keyboard_switches.h",
     "keyboard_ui.cc",
     "keyboard_ui.h",
     "keyboard_util.cc",
     "keyboard_util.h",
@@ skipping 114 matching lines @@
     "keyboard.mojom",
   ]
   deps = [
     "//ui/gfx/geometry/mojo",
   ]
 }
 
 test("keyboard_unittests") {
   sources = [
     "keyboard_controller_unittest.cc",
+    "keyboard_event_filter_unittest.cc",
     "keyboard_util_unittest.cc",
     "test/run_all_unittests.cc",
   ]
 
   deps = [
     ":keyboard",
     "//base",
     "//base/test:test_support",
     "//skia",
     "//testing/gtest",
     "//ui/aura:test_support",
     "//ui/base",
     "//ui/base:test_support",
     "//ui/base/ime",
     "//ui/compositor:test_support",
     "//ui/events:test_support",
     "//ui/gfx",
     "//ui/gfx/geometry",
     "//ui/gl:test_support",
     "//ui/resources:ui_test_pak",
     "//ui/wm",
   ]
 }