Implement OffscreenCanvas.commit() on Unaccelerated 2D on worker

content/renderer/renderer_blink_platform_impl.cc

 // Copyright (c) 2012 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 "content/renderer/renderer_blink_platform_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 261 matching lines @@
   } else {
     DVLOG(1) << "Disabling sandbox support for testing.";
   }
 #endif
 
   // ChildThread may not exist in some tests.
   if (ChildThreadImpl::current()) {
     sync_message_filter_ = ChildThreadImpl::current()->sync_message_filter();
     thread_safe_sender_ = ChildThreadImpl::current()->thread_safe_sender();
     quota_message_filter_ = ChildThreadImpl::current()->quota_message_filter();
+    shared_bitmap_manager_ =
+        ChildThreadImpl::current()->shared_bitmap_manager();
     blob_registry_.reset(new WebBlobRegistryImpl(
         RenderThreadImpl::current()->GetIOTaskRunner().get(),
         base::ThreadTaskRunnerHandle::Get(), thread_safe_sender_.get()));
     web_idb_factory_.reset(new WebIDBFactoryImpl(thread_safe_sender_.get()));
     web_database_observer_impl_.reset(
         new WebDatabaseObserverImpl(sync_message_filter_.get()));
   }
 
   top_level_blame_context_.Initialize();
   renderer_scheduler_->SetTopLevelBlameContext(&top_level_blame_context_);
 }
 
 RendererBlinkPlatformImpl::~RendererBlinkPlatformImpl() {
   WebFileSystemImpl::DeleteThreadSpecificInstance();
   renderer_scheduler_->SetTopLevelBlameContext(nullptr);
+  shared_bitmap_manager_ = nullptr;
 }
 
 void RendererBlinkPlatformImpl::Shutdown() {
 #if !defined(OS_ANDROID) && !defined(OS_WIN)
   // SandboxSupport contains a map of WebFontFamily objects, which hold
   // WebCStrings, which become invalidated when blink is shut down. Hence, we
   // need to clear that map now, just before blink::shutdown() is called.
   sandbox_support_.reset();
 #endif
 }
@@ skipping 837 matching lines @@
 
 gpu::GpuMemoryBufferManager*
 RendererBlinkPlatformImpl::getGpuMemoryBufferManager() {
   return ChildThreadImpl::current()->gpu_memory_buffer_manager();
 }
 
 //------------------------------------------------------------------------------
 
 std::unique_ptr<cc::SharedBitmap>
 RendererBlinkPlatformImpl::allocateSharedBitmap(const blink::WebSize& size) {
-  return ChildThreadImpl::current()
-      ->shared_bitmap_manager()
+  return shared_bitmap_manager_
       ->AllocateSharedBitmap(gfx::Size(size.width, size.height));
 }
 
 //------------------------------------------------------------------------------
 
 blink::WebCompositorSupport* RendererBlinkPlatformImpl::compositorSupport() {
   return &compositor_support_;
 }
 
 //------------------------------------------------------------------------------
@@ skipping 178 matching lines @@
   return &trial_token_validator_;
 }
 
 void RendererBlinkPlatformImpl::workerContextCreated(
     const v8::Local<v8::Context>& worker) {
   GetContentClient()->renderer()->DidInitializeWorkerContextOnWorkerThread(
       worker);
 }
 
 }  // namespace content