Add GLStreamTextureImage

gpu/command_buffer/service/gl_stream_texture_image.h

+// 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.
+
+#ifndef GPU_COMMAND_BUFFER_SERVICE_GL_STREAM_TEXTURE_IMAGE_H_
+#define GPU_COMMAND_BUFFER_SERVICE_GL_STREAM_TEXTURE_IMAGE_H_
+
+#include "ui/gl/gl_image.h"
+
+namespace gpu {
+namespace gles2 {
+
+// Specialization of GLImage that allows us to support (stream) textures
+// that supply a texture matrix.
+class GPU_EXPORT GLStreamTextureImage : public gl::GLImage {
+ public:
+  GLStreamTextureImage() {}
+
+  // Get the matrix.
+  // Copy the texture matrix for this image into |matrix|.
+  virtual void GetTextureMatrix(float matrix[16]) = 0;
+
+ protected:
+  ~GLStreamTextureImage() override {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(GLStreamTextureImage);
+};
+
+}  // namespace gles2
+}  // namespace gpu
+
+#endif  // GPU_COMMAND_BUFFER_SERVICE_GL_STREAM_TEXTURE_IMAGE_H_