Implement HitTestAggregator

components/viz/common/BUILD.gn

 # Copyright 2017 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("//testing/test.gni")
 
 source_set("common") {
   sources = [
+    "aggregated_hit_test_region.h",

[danakj, 2017/07/13 15:39:38]

Can you put this in common/hit_test?

We're trying to avoid situations where there is code in a directory that isn't a
leaf in the directory tree.

[gklassen, 2017/07/13 19:59:13]

It was originally in common/hit_test, but I am happy to move it back assuming
this has been agreed by others. 

Done. 

     "frame_sink_id.cc",
     "frame_sink_id.h",
     "frame_sink_id_allocator.h",
     "gl_helper.cc",
     "gl_helper.h",
     "gl_helper_readback_support.cc",
     "gl_helper_readback_support.h",
     "gl_helper_scaling.cc",
     "gl_helper_scaling.h",
     "local_surface_id.cc",
@@ skipping 16 matching lines @@
     "surface_id.cc",
     "surface_id.h",
   ]
 
   deps = [
     "//base",
     "//gpu/command_buffer/client:gles2_interface",
     "//mojo/public/cpp/bindings",
     "//skia",
     "//ui/gfx:color_space",
+    "//ui/gfx:geometry_skia",
     "//ui/gfx/geometry",
   ]
 
   public_deps = [
     "//gpu/command_buffer/client",
     "//gpu/command_buffer/common",
     "//mojo/public/cpp/bindings",
   ]
 }
 
@@ skipping 42 matching lines @@
     "//gpu/ipc:gl_in_process_context",
     "//testing/gmock",
     "//testing/gtest",
     "//ui/gfx",
   ]
 
   data_deps = [
     "//third_party/mesa:osmesa",
   ]
 }