gpu: Add CHROMIUM_texture_from_image spec and fence support.

gpu/command_buffer/tests/texture_image_factory.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 "gpu/command_buffer/tests/texture_image_factory.h"
 
 #include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_image.h"
 
 namespace gpu {
 
 // An image that allocates storage for the texture using glTexImage2D.
 class TextureImage : public gl::GLImage {
  public:
   explicit TextureImage(const gfx::Size& size) : size_(size) {}
 
   gfx::Size GetSize() override { return size_; }
   unsigned GetInternalFormat() override { return GL_RGBA; }
-  bool BindTexImage(unsigned target) override {
+  bool BindTexImage(unsigned target, gl::GLFence* fence) override {
     glTexImage2D(target,
                  0,  // mip level
                  GetInternalFormat(), size_.width(), size_.height(),
                  0,  // border
                  GetInternalFormat(), GL_UNSIGNED_BYTE, nullptr);
     return true;
   }
   void ReleaseTexImage(unsigned target) override {}
   bool CopyTexImage(unsigned target) override { return false; }
   bool CopyTexSubImage(unsigned target,
@@ skipping 44 matching lines @@
 
 bool TextureImageFactory::SupportsFormatRGB() {
   return false;
 }
 
 void TextureImageFactory::SetRequiredTextureType(unsigned type) {
   required_texture_type_ = type;
 }
 
 }  // namespace gpu