Add VR Shell animation classes and unit test.

chrome/browser/android/vr_shell/vr_shell_renderer.cc

 // 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.
 
 #include "chrome/browser/android/vr_shell/vr_shell_renderer.h"
 
-#include "chrome/browser/android/vr_shell/vr_util.h"
+#include "chrome/browser/android/vr_shell/vr_gl_util.h"
 #include "ui/gl/gl_bindings.h"
 
 namespace {
 
 #define RECTANGULAR_TEXTURE_BUFFER(left, right, bottom, top) \
   { left, bottom, left, top, right, bottom, left, top, right, top, right, \
     bottom }
 
 static constexpr float kHalfHeight = 0.5f;
 static constexpr float kHalfWidth = 0.5f;
@@ skipping 235 matching lines @@
 // segfaults.
 WebVrRenderer::~WebVrRenderer() = default;
 
 VrShellRenderer::VrShellRenderer()
     : textured_quad_renderer_(new TexturedQuadRenderer),
       webvr_renderer_(new WebVrRenderer) {}
 
 VrShellRenderer::~VrShellRenderer() = default;
 
 }  // namespace vr_shell