third_party: Add libevdev and gestures.

third_party/gestures/BUILD.gn

+# Copyright 2016 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("//build/config/linux/pkg_config.gni")
+
+assert(is_linux)
+
+declare_args() {
+  # Controls whether the build should use the version of gestures
+  # library shipped with the system. In release builds of Chrome OS we
+  # use the system version, but when building on dev workstations we
+  # bundle it because Ubuntu doesn't ship a usable version.
+  use_system_gestures = true
+}
+
+if (!use_system_gestures) {
+  config("gestures_config") {
+    include_dirs = [
+      ".",
+      "include",
+      "//testing/gtest/include",
+    ]
+  }
+
+  pkg_config("jsoncpp") {
+    packages = [ "jsoncpp" ]
+  }
+
+  static_library("gestures") {
+    sources = [
+      "gestures/src/accel_filter_interpreter.cc",
+      "gestures/src/activity_log.cc",
+      "gestures/src/box_filter_interpreter.cc",
+      "gestures/src/click_wiggle_filter_interpreter.cc",
+      "gestures/src/cr48_profile_sensor_filter_interpreter.cc",
+      "gestures/src/file_util.cc",
+      "gestures/src/filter_interpreter.cc",
+      "gestures/src/finger_merge_filter_interpreter.cc",
+      "gestures/src/finger_metrics.cc",
+      "gestures/src/fling_stop_filter_interpreter.cc",
+      "gestures/src/gestures.cc",
+      "gestures/src/iir_filter_interpreter.cc",
+      "gestures/src/immediate_interpreter.cc",
+      "gestures/src/integral_gesture_filter_interpreter.cc",
+      "gestures/src/interpreter.cc",
+      "gestures/src/logging_filter_interpreter.cc",
+      "gestures/src/lookahead_filter_interpreter.cc",
+      "gestures/src/metrics_filter_interpreter.cc",
+      "gestures/src/mouse_interpreter.cc",
+      "gestures/src/multitouch_mouse_interpreter.cc",
+      "gestures/src/non_linearity_filter_interpreter.cc",
+      "gestures/src/palm_classifying_filter_interpreter.cc",
+      "gestures/src/prop_registry.cc",
+      "gestures/src/scaling_filter_interpreter.cc",
+      "gestures/src/sensor_jump_filter_interpreter.cc",
+      "gestures/src/split_correcting_filter_interpreter.cc",
+      "gestures/src/stationary_wiggle_filter_interpreter.cc",
+      "gestures/src/string_util.cc",
+      "gestures/src/stuck_button_inhibitor_filter_interpreter.cc",
+      "gestures/src/t5r2_correcting_filter_interpreter.cc",
+      "gestures/src/trace_marker.cc",
+      "gestures/src/tracer.cc",
+      "gestures/src/trend_classifying_filter_interpreter.cc",
+      "gestures/src/util.cc",
+    ]
+
+    defines = [ "GESTURES_INTERNAL=1" ]
+
+    configs -= [ "//build/config/compiler:chromium_code" ]
+    configs += [
+      "//build/config/compiler:no_chromium_code",
+      ":jsoncpp",
+    ]
+
+    # gestures uses typeid.
+    configs -= [ "//build/config/compiler:no_rtti" ]
+    configs += [ "//build/config/compiler:rtti" ]
+
+    if (is_clang) {
+      # Suppress warnings from the Chromium Clang plugin.
+      configs -= [ "//build/config/clang:find_bad_constructs" ]
+    }
+
+    public_configs = [ ":gestures_config" ]
+  }
+}
+
+if (use_system_gestures) {
+  pkg_config("libgestures") {
+    packages = [ "libgestures" ]
+  }
+
+  group("gestures") {
+    public_configs = [ ":libgestures" ]
+  }
+}