content: Fix Context creation logic in ContextProviderFactoryImpl.

content/test/mock_gpu_channel_establish_factory.cc

Index: content/test/mock_gpu_channel_establish_factory.cc
diff --git a/content/test/mock_gpu_channel_establish_factory.cc b/content/test/mock_gpu_channel_establish_factory.cc
new file mode 100644
index 0000000000000000000000000000000000000000..123367edac3168bbf17ef8739f1568edf646f77f
--- /dev/null
+++ b/content/test/mock_gpu_channel_establish_factory.cc
@@ -0,0 +1,28 @@
+// Copyright 2011 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/test/mock_gpu_channel_establish_factory.h"
+
+namespace content {
+
+MockGpuChannelEstablishFactory::MockGpuChannelEstablishFactory() = default;
+
+MockGpuChannelEstablishFactory::~MockGpuChannelEstablishFactory() = default;
+
+void MockGpuChannelEstablishFactory::EstablishGpuChannel(
+    const gpu::GpuChannelEstablishedCallback& callback) {
+  callback.Run(nullptr);
+}
+
+scoped_refptr<gpu::GpuChannelHost>
+MockGpuChannelEstablishFactory::EstablishGpuChannelSync() {
+  return nullptr;
+}
+
+gpu::GpuMemoryBufferManager*
+MockGpuChannelEstablishFactory::GetGpuMemoryBufferManager() {
+  return nullptr;
+}
+
+}  // namespace content