Add display::GetDisplayNearestView

ui/gfx/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")
 import("//testing/test.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 
 if (is_android) {
   import("//build/config/android/config.gni")
@@ skipping 498 matching lines @@
     public_deps = [
       ":gfx",
     ]
   } else {
     public_deps = [
       ":memory_buffer_sources",
     ]
   }
 }
 
+source_set("view_util") {
+  sources = [
+    "view_util.h",
+  ]
+  if (use_aura) {
+    sources += [ "view_util_aura.cc" ]
+    deps = [
+      "//ui/aura",
+    ]
+  }
+  if (is_android && !use_aura) {
+    sources += [ "view_util_android.cc" ]
+  }
+  if (is_mac) {
+    sources += [ "view_util_mac.mm" ]

[tapted, 2017/02/15 00:36:10]

foo_mac should be automatically stripped - this can just be listed in sources=

[Jinsuk Kim, 2017/02/16 10:11:25]

Done.

+  }
+}
+
 # Cannot be a static_library in component builds due to exported functions
 source_set("memory_buffer_sources") {
   visibility = [ ":*" ]  # Depend on through ":memory_buffer".
 
   # TODO(brettw) refactor this so these sources are in a coherent directory
   # structure rather than random samplings of ui/gfx and ui/gfx/mac.

[tapted, 2017/02/15 00:36:10]

Note this comment. We should put the new component into its own directory, add
DEPS, etc.

[Jinsuk Kim, 2017/02/16 10:11:25]

Yes moved it under ui/gfx/native_widget for now.

   sources = [
     "buffer_format_util.cc",
     "buffer_format_util.h",
     "buffer_types.h",
     "generic_shared_memory_id.cc",
     "generic_shared_memory_id.h",
     "gfx_export.h",
     "mac/io_surface.cc",
     "mac/io_surface.h",
     "native_pixmap_handle.cc",
@@ skipping 228 matching lines @@
 
 fuzzer_test("color_transform_fuzztest") {
   sources = [
     "color_transform_fuzzer.cc",
   ]
   deps = [
     ":gfx",
   ]
   libfuzzer_options = [ "max_len=1024" ]
 }