Expose GpuMemoryBufferId through glGetImageivCHROMIUM.

cc/test/test_web_graphics_context_3d.cc

 // Copyright 2013 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 "cc/test/test_web_graphics_context_3d.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 621 matching lines @@
     GLenum internalformat,
     GLenum usage) {
   DCHECK_EQ(GL_RGBA, static_cast<int>(internalformat));
   GLuint image_id = NextImageId();
   base::AutoLock lock(namespace_->lock);
   std::unordered_set<unsigned>& images = namespace_->images;
   images.insert(image_id);
   return image_id;
 }
 
+GLint TestWebGraphicsContext3D::getImageivCHROMIUM(GLuint image_id,
+                                                   GLenum param) {
+  DCHECK_EQ(GL_GPU_MEMORY_BUFFER_ID, static_cast<int>(param));
+  base::AutoLock lock(namespace_->lock);
+  std::unordered_set<unsigned>& images = namespace_->images;
+  if (images.find(image_id) != images.end())
+    return 1;
+  return -1;
+}
+
 GLuint64 TestWebGraphicsContext3D::insertFenceSync() {
   return next_insert_fence_sync_++;
 }
 
 void TestWebGraphicsContext3D::genSyncToken(GLuint64 fence_sync,
                                             GLbyte* sync_token) {
   gpu::SyncToken sync_token_data(gpu::CommandBufferNamespace::GPU_IO, 0,
                                  gpu::CommandBufferId(), fence_sync);
   sync_token_data.SetVerifyFlush();
   memcpy(sync_token, &sync_token_data, sizeof(sync_token_data));
@@ skipping 172 matching lines @@
 
 TestWebGraphicsContext3D::Buffer::Buffer() : target(0), size(0) {}
 
 TestWebGraphicsContext3D::Buffer::~Buffer() {}
 
 TestWebGraphicsContext3D::Image::Image() {}
 
 TestWebGraphicsContext3D::Image::~Image() {}
 
 }  // namespace cc