VR: Further split common code from Android-specific code.

chrome/browser/android/vr_shell/ui_scene_unittest.cc

 // Copyright (c) 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.
 
 #include "chrome/browser/android/vr_shell/ui_scene.h"
 
 #define _USE_MATH_DEFINES  // For M_PI in MSVC.
 #include <cmath>
 #include <utility>
 #include <vector>
@@ skipping 30 matching lines @@
   auto element = base::MakeUnique<UiElement>();
   element->set_id(id);
   scene->AddUiElement(std::move(element));
 }
 
 void addAnimation(UiScene* scene,
                   int element_id,
                   int animation_id,
                   Animation::Property property) {
   std::unique_ptr<easing::Easing> easing = base::MakeUnique<easing::Linear>();
-  std::vector<float> from = {};
+  std::vector<float> from;
   std::vector<float> to = {1, 1, 1, 1};
   auto animation =
       base::MakeUnique<Animation>(animation_id, property, std::move(easing),
                                   from, to, usToTicks(0), usToDelta(1));
   scene->AddAnimation(element_id, std::move(animation));
 }
 
 }  // namespace
 
 TEST(UiScene, AddRemoveElements) {
@@ skipping 160 matching lines @@
     {XAnchoring::XNONE, YAnchoring::YTOP, 0, 2},
     {XAnchoring::XNONE, YAnchoring::YBOTTOM, 0, -2},
     {XAnchoring::XLEFT, YAnchoring::YTOP, -2, 2},
 };
 
 INSTANTIATE_TEST_CASE_P(AnchoringTestCases,
                         AnchoringTest,
                         ::testing::ValuesIn(anchoring_test_cases));
 
 }  // namespace vr_shell