Implement offscreenCanvas.getContext('webgl') on a worker thread

third_party/WebKit/Source/modules/webgl/WebGLContextProviderCreationInfo.h

Index: third_party/WebKit/Source/modules/webgl/WebGLContextProviderCreationInfo.h
diff --git a/third_party/WebKit/Source/modules/webgl/WebGLContextProviderCreationInfo.h b/third_party/WebKit/Source/modules/webgl/WebGLContextProviderCreationInfo.h
new file mode 100644
index 0000000000000000000000000000000000000000..66366b43fcff3e9d578dc4390be7ae3b378ba82f
--- /dev/null
+++ b/third_party/WebKit/Source/modules/webgl/WebGLContextProviderCreationInfo.h
@@ -0,0 +1,37 @@
+// 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.
+
+#ifndef WebGLContextProviderCreationInfo_h
+#define WebGLContextProviderCreationInfo_h
+
+#include "bindings/core/v8/ScriptState.h"
+#include "modules/ModulesExport.h"
+#include "public/platform/Platform.h"
+#include "public/platform/WebGraphicsContext3DProvider.h"
+
+namespace blink {
+
+class MODULES_EXPORT WebGLContextProviderCreationInfo {
+public:
+    WebGLContextProviderCreationInfo(Platform::ContextAttributes contextAttributes, Platform::GraphicsInfo glInfo, ScriptState* scriptState)
+    {
+        m_contextAttributes = contextAttributes;
+        m_glInfo = glInfo;
+        m_scriptState = scriptState;
+    }
+    Platform::ContextAttributes contextAttributes() { return m_contextAttributes; }
+    Platform::GraphicsInfo glInfo() { return m_glInfo; }
+    ScriptState* scriptState() { return m_scriptState; }
+    void setContextProvider(PassOwnPtr<WebGraphicsContext3DProvider> provider) { m_provider = std::move(provider); }
+    PassOwnPtr<WebGraphicsContext3DProvider> releaseContextProvider() { return m_provider.release(); }
+private:
+    Platform::ContextAttributes m_contextAttributes;
+    Platform::GraphicsInfo m_glInfo;
+    ScriptState* m_scriptState;
+    OwnPtr<WebGraphicsContext3DProvider> m_provider;
+};
+
+} // namespace blink
+
+#endif // WebGLContextProviderCreationInfo_h