Hook ScrollElasticityController to InputHandlerProxy

cc/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.
 
 component("cc") {
   sources = [
     "animation/animation.cc",
     "animation/animation.h",
     "animation/animation_curve.cc",
     "animation/animation_curve.h",
@@ skipping 100 matching lines @@
     "debug/unittest_only_benchmark.cc",
     "debug/unittest_only_benchmark.h",
     "debug/unittest_only_benchmark_impl.cc",
     "debug/unittest_only_benchmark_impl.h",
     "input/input_handler.cc",
     "input/input_handler.h",
     "input/page_scale_animation.cc",
     "input/page_scale_animation.h",
     "input/layer_selection_bound.cc",
     "input/layer_selection_bound.h",
+    "input/scroll_elasticity_helper.cc",
+    "input/scroll_elasticity_helper.h",
     "input/selection_bound_type.h",
     "input/top_controls_manager.cc",
     "input/top_controls_manager.h",
     "input/top_controls_manager_client.h",
     "layers/append_quads_data.h",
     "layers/content_layer.cc",
     "layers/content_layer.h",
     "layers/content_layer_client.h",
     "layers/contents_scaling_layer.cc",
     "layers/contents_scaling_layer.h",
@@ skipping 703 matching lines @@
     "//gpu/command_buffer/common:gles2_utils",
     "//media",
     "//skia",
     "//testing/gmock",
     "//testing/gtest",
     "//testing/perf",
     "//ui/gfx",
     "//ui/gfx/geometry",
   ]
 }