DrawingBuffer: Use gfx::GpuMemoryBuffer directly and set color space

third_party/WebKit/Source/platform/graphics/gpu/DrawingBufferTestHelpers.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.
 
 #include "gpu/command_buffer/common/capabilities.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/graphics/gpu/DrawingBuffer.h"
 #include "platform/graphics/gpu/Extensions3DUtil.h"
 #include "public/platform/WebGraphicsContext3DProvider.h"
 #include "testing/gmock/include/gmock/gmock.h"
@@ skipping 221 matching lines @@
                   GLsizei height,
                   GLint border,
                   GLenum format,
                   GLenum type,
                   const void* pixels) override {
     if (target == GL_TEXTURE_2D && !level) {
       m_textureSizes.set(m_boundTextures[target], IntSize(width, height));
     }
   }
 
-  GLuint CreateGpuMemoryBufferImageCHROMIUM(GLsizei width,
-                                            GLsizei height,
-                                            GLenum internalformat,
-                                            GLenum usage) override {
+  GLuint CreateImageCHROMIUM(ClientBuffer buffer,
+                             GLsizei width,
+                             GLsizei height,
+                             GLenum internalformat) override {
     if (m_createImageChromiumFail)
       return 0;
     m_imageSizes.set(m_currentImageId, IntSize(width, height));
     return m_currentImageId++;
   }
 
   MOCK_METHOD1(DestroyImageMock, void(GLuint imageId));
   void DestroyImageCHROMIUM(GLuint imageId) {
     m_imageSizes.remove(imageId);
     // No textures should be bound to this.
@@ skipping 136 matching lines @@
   GLbyte m_currentMailboxByte = 0;
   IntSize m_mostRecentlyProducedSize;
   bool m_createImageChromiumFail = false;
   GLuint m_currentImageId = 1;
   HashMap<GLuint, IntSize> m_textureSizes;
   HashMap<GLuint, IntSize> m_imageSizes;
   HashMap<GLuint, GLuint> m_imageToTextureMap;
 };
 
 }  // blink