Refactor Vr activity into ChromeTabbedActivity.

chrome/browser/android/vr_shell/vr_shell_renderer.h

Index: chrome/browser/android/vr_shell/vr_shell_renderer.h
diff --git a/chrome/browser/android/vr_shell/vr_shell_renderer.h b/chrome/browser/android/vr_shell/vr_shell_renderer.h
index 540e91b1849de9ece88ef56423b7ef1c383dbb9f..3126d75e89557925da837f44ad5ea22d92e95909 100644
--- a/chrome/browser/android/vr_shell/vr_shell_renderer.h
+++ b/chrome/browser/android/vr_shell/vr_shell_renderer.h
@@ -10,6 +10,7 @@
 #include <vector>
 
 #include "base/macros.h"
+#include "chrome/browser/android/vr_shell/vr_util.h"
 #include "third_party/gvr-android-sdk/src/ndk-beta/include/vr/gvr/capi/include/gvr.h"
 #include "third_party/gvr-android-sdk/src/ndk-beta/include/vr/gvr/capi/include/gvr_types.h"
 
@@ -30,14 +31,31 @@ class TexturedQuadRenderer {
   ~TexturedQuadRenderer();
 
   // Draw the content rect in the texture quad.
-  void Draw(int texture_data_handle, const gvr::Mat4f& combined_matrix);
+  void Draw(int textureDataHandle, const gvr::Mat4f& combinedMatrix,
+            const Rectf& copyRect);
 
  private:
+  static constexpr float kHalfHeight = 0.5f;
+  static constexpr float kHalfWidth = 0.5f;
+  static constexpr float kTextureQuadPosition[18] = {
+      -kHalfWidth, kHalfHeight,  0.0f, -kHalfWidth, -kHalfHeight, 0.0f,
+      kHalfWidth,  kHalfHeight,  0.0f, -kHalfWidth, -kHalfHeight, 0.0f,
+      kHalfWidth,  -kHalfHeight, 0.0f, kHalfWidth,  kHalfHeight,  0.0f};
+  static constexpr int kPositionDataSize = 3;
+  // Number of vertices passed to glDrawArrays().
+  static constexpr int kVerticesNumber = 6;
+
+  static constexpr float kTexturedQuadTextureCoordinates[12] =
+      makeRectangularTextureBuffer(0.0f, 1.0f, 0.0f, 1.0f);
+
+  static constexpr int kTextureCoordinateDataSize = 2;
+
   GLuint vertex_shader_handle_;
   GLuint fragment_shader_handle_;
   GLuint program_handle_;
   GLuint combined_matrix_handle_;
   GLuint texture_uniform_handle_;
+  GLuint copy_rect_uniform_handle_;
   GLuint position_handle_;
   GLuint texture_coordinate_handle_;
 
@@ -55,6 +73,7 @@ class VrShellRenderer {
 
  private:
   std::unique_ptr<TexturedQuadRenderer> textured_quad_renderer_;
+
   DISALLOW_COPY_AND_ASSIGN(VrShellRenderer);
 };