VR: Split off UI code into a library to ease future unit testing.

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 <math.h>
 #include <algorithm>
 #include <string>
 
@@ skipping 799 matching lines @@
       reticle_renderer_(base::MakeUnique<ReticleRenderer>()),
       laser_renderer_(base::MakeUnique<LaserRenderer>()),
       controller_renderer_(base::MakeUnique<ControllerRenderer>()),
       gradient_quad_renderer_(base::MakeUnique<GradientQuadRenderer>()),
       gradient_grid_renderer_(base::MakeUnique<GradientGridRenderer>()) {
   BaseQuadRenderer::SetVertexBuffer();
 }
 
 VrShellRenderer::~VrShellRenderer() = default;
 
+void VrShellRenderer::DrawTexturedQuad(int texture_data_handle,
+                                       const vr::Mat4f& view_proj_matrix,
+                                       const gfx::RectF& copy_rect,
+                                       float opacity) {
+  GetTexturedQuadRenderer()->AddQuad(texture_data_handle, view_proj_matrix,
+                                     copy_rect, opacity);
+}
+
+void VrShellRenderer::DrawGradientQuad(const vr::Mat4f& view_proj_matrix,
+                                       const SkColor edge_color,
+                                       const SkColor center_color,
+                                       float opacity) {
+  GetGradientQuadRenderer()->Draw(view_proj_matrix, edge_color, center_color,
+                                  opacity);
+}
+
 ExternalTexturedQuadRenderer*
 VrShellRenderer::GetExternalTexturedQuadRenderer() {
   Flush();
   return external_textured_quad_renderer_.get();
 }
 
 TexturedQuadRenderer* VrShellRenderer::GetTexturedQuadRenderer() {
   return textured_quad_renderer_.get();
 }
 
@@ skipping 25 matching lines @@
 GradientGridRenderer* VrShellRenderer::GetGradientGridRenderer() {
   Flush();
   return gradient_grid_renderer_.get();
 }
 
 void VrShellRenderer::Flush() {
   textured_quad_renderer_->Flush();
 }
 
 }  // namespace vr_shell