Add viz-host HitTestQuery.

components/viz/hit_test/BUILD.gn

Index: components/viz/hit_test/BUILD.gn
diff --git a/components/viz/hit_test/BUILD.gn b/components/viz/hit_test/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..91f2416b2bbac26da4bd3d5559fb79cd72f1dcd7
--- /dev/null
+++ b/components/viz/hit_test/BUILD.gn
@@ -0,0 +1,39 @@
+# 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")
+
+# TODO(riajiang): Integrate with https://codereview.chromium.org/2908783002/.

[rjkroege, 2017/06/12 17:17:23]

One of you needs to land first. :-)

+component("hit_test") {
+  defines = [ "HIT_TEST_IMPLEMENTATION" ]
+
+  sources = [
+    "common/display_hit_test_data.h",
+    "query/hit_test_query.cc",
+    "query/hit_test_query.h",
+  ]
+
+  public_deps = [
+    "//cc/surfaces:surface_id",
+    "//ui/gfx",
+    "//ui/gfx/geometry",
+  ]
+}
+
+test("viz_hit_test_unittests") {
+  testonly = true
+
+  sources = [
+    "query/hit_test_query_unittest.cc",
+  ]
+
+  deps = [
+    ":hit_test",
+    "//base",
+    "//base/test:run_all_unittests",
+    "//base/test:test_support",
+    "//cc:test_support",
+    "//testing/gtest",
+  ]
+}