Add the Play Store app search to the launcher.

ui/app_list/vector_icons/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("//ui/vector_icons/vector_icons.gni")
+
+aggregate_vector_icons("app_list_vector_icons") {
+  icon_directory = "."
+
+  icons = [
+    "ic_badge_instant.1x.icon",
+    "ic_badge_instant.icon",
+    "ic_badge_play.1x.icon",
+    "ic_badge_play.icon",
+    "ic_google_black.1x.icon",
+    "ic_google_black.icon",
+    "ic_mic_black.1x.icon",
+    "ic_mic_black.icon",
+  ]
+}
+
+source_set("vector_icons") {
+  sources = get_target_outputs(":app_list_vector_icons")
+
+  deps = [
+    ":app_list_vector_icons",
+    "//skia",
+  ]
+}