Consolidate content fling implementations

ui/events/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("//build/config/ui.gni")
 
 static_library("dom4_keycode_converter") {
   sources = [
     "keycodes/dom4/keycode_converter.cc",
     "keycodes/dom4/keycode_converter.h",
     "keycodes/dom4/keycode_converter_data.h",
   ]
 
   deps = [ "//base" ]
 }
 
 component("events_base") {
   sources = [
+    "android/scroller.cc",
+    "android/scroller.h",
     "device_data_manager.cc",
     "device_data_manager.h",
     "device_hotplug_event_observer.h",
     "event_constants.h",
     "event_switches.cc",
     "event_switches.h",
     "events_base_export.h",
+    "gesture_curve.h",
     "gesture_event_details.cc",
     "gesture_event_details.h",
     "gestures/fling_curve.cc",
     "gestures/fling_curve.h",
     "gestures/gesture_configuration.cc",
     "gestures/gesture_configuration.h",
     "keycodes/keyboard_code_conversion.cc",
     "keycodes/keyboard_code_conversion.h",
     "keycodes/keyboard_code_conversion_android.cc",
     "keycodes/keyboard_code_conversion_android.h",
@@ skipping 230 matching lines @@
     sources += [
       "test/events_test_utils_x11.cc",
       "test/events_test_utils_x11.h",
     ]
     deps += [ "//ui/gfx/x" ]
   }
 }
 
 test("events_unittests") {
   sources = [
+    "android/scroller_unittest.cc",
     "cocoa/events_mac_unittest.mm",
     "event_dispatcher_unittest.cc",
     "event_processor_unittest.cc",
     "event_rewriter_unittest.cc",
     "event_unittest.cc",
     "gesture_detection/bitset_32_unittest.cc",
     "gesture_detection/gesture_event_data_packet_unittest.cc",
     "gesture_detection/gesture_provider_unittest.cc",
     "gesture_detection/motion_event_buffer_unittest.cc",
     "gesture_detection/motion_event_generic_unittest.cc",
@@ skipping 35 matching lines @@
       "ozone/evdev/touch_event_converter_evdev_unittest.cc",
     ]
   }
 
   if (use_aura) {
     sources += [
       "gestures/gesture_provider_aura_unittest.cc",
     ]
   }
 }