GPU context creation code duplication cleanup

webkit/common/gpu/webgraphicscontext3d_impl.h

 // 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.
 
 #ifndef WEBKIT_COMMON_GPU_WEBGRAPHICSCONTEXT3D_IMPL_H_
 #define WEBKIT_COMMON_GPU_WEBGRAPHICSCONTEXT3D_IMPL_H_
 
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "webkit/common/gpu/webkit_gpu_export.h"
 
 namespace gpu {
 
 namespace gles2 {
 class GLES2Interface;
 class GLES2ImplementationErrorMessageCallback;
+struct ContextCreationAttribHelper;
 }
 }
 
 using blink::WebGLId;
 
 using blink::WGC3Dbyte;
 using blink::WGC3Dchar;
 using blink::WGC3Denum;
 using blink::WGC3Dboolean;
 using blink::WGC3Dbitfield;
@@ skipping 520 matching lines @@
   virtual void renderbufferStorageMultisampleEXT(
       WGC3Denum target, WGC3Dsizei samples, WGC3Denum internalformat,
       WGC3Dsizei width, WGC3Dsizei height);
 
   virtual GrGLInterface* createGrGLInterface();
 
   ::gpu::gles2::GLES2Interface* GetGLInterface() {
     return gl_;
   }
 
+  // Convert WebGL context creation attributes into command buffer / EGL size
+  // requests.
+  static void ConvertAttributes(
+      const blink::WebGraphicsContext3D::Attributes& attributes,
+      ::gpu::gles2::ContextCreationAttribHelper* output_attribs);
+
  protected:
   friend class WebGraphicsContext3DErrorMessageCallback;
 
   WebGraphicsContext3DImpl();
   virtual ~WebGraphicsContext3DImpl();
 
   ::gpu::gles2::GLES2ImplementationErrorMessageCallback*
       getErrorMessageCallback();
   virtual void OnErrorMessage(const std::string& message, int id);
 
@@ skipping 17 matching lines @@
 
   ::gpu::gles2::GLES2Interface* gl_;
   bool lose_context_when_out_of_memory_;
   uint32_t flush_id_;
 };
 
 }  // namespace gpu
 }  // namespace webkit
 
 #endif  // WEBKIT_COMMON_GPU_WEBGRAPHICSCONTEXT3D_IMPL_H_