VR: Add a loading indicator to the scene.

chrome/browser/android/vr_shell/BUILD.gn

 # Copyright 2016 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/android/rules.gni")
 import("//chrome/common/features.gni")
 import("//device/vr/features/features.gni")
 import("//testing/test.gni")
 
 assert(enable_vr)
@@ skipping 22 matching lines @@
       "mailbox_to_surface_bridge.cc",
       "mailbox_to_surface_bridge.h",
       "non_presenting_gvr_delegate.cc",
       "non_presenting_gvr_delegate.h",
       "textures/close_button_texture.cc",
       "textures/close_button_texture.h",
       "textures/insecure_content_permanent_texture.cc",
       "textures/insecure_content_permanent_texture.h",
       "textures/insecure_content_transient_texture.cc",
       "textures/insecure_content_transient_texture.h",
+      "textures/loading_indicator_texture.cc",
+      "textures/loading_indicator_texture.h",
       "textures/ui_texture.cc",
       "textures/ui_texture.h",
       "textures/url_bar_texture.cc",
       "textures/url_bar_texture.h",
       "ui_elements/close_button.cc",
       "ui_elements/close_button.h",
+      "ui_elements/loading_indicator.cc",
+      "ui_elements/loading_indicator.h",
       "ui_elements/permanent_security_warning.cc",
       "ui_elements/permanent_security_warning.h",
       "ui_elements/textured_element.cc",
       "ui_elements/textured_element.h",
       "ui_elements/transient_security_warning.cc",
       "ui_elements/transient_security_warning.h",
       "ui_elements/ui_element.cc",
       "ui_elements/ui_element.h",
       "ui_elements/url_bar.cc",
       "ui_elements/url_bar.h",
@@ skipping 98 matching lines @@
   # See https://crbug.com/704305 for details.
   libs = [ "//third_party/gvr-android-sdk/libgvr_shim_static_${current_cpu}.a" ]
 
   data = [
     "test/data/sample_inline.gltf",
     "test/data/sample_external.gltf",
     "test/data/sample.bin",
     "test/data/sample.glb",
   ]
 }