GPU context creation code duplication cleanup

webkit/common/gpu/webgraphicscontext3d_impl.h

Index: webkit/common/gpu/webgraphicscontext3d_impl.h
diff --git a/webkit/common/gpu/webgraphicscontext3d_impl.h b/webkit/common/gpu/webgraphicscontext3d_impl.h
index 83af0b4ad1ae5a9cdde0908e3ea52f6ff64e5d60..5cb055db5f841ebcf7c4978b28828697370b0330 100644
--- a/webkit/common/gpu/webgraphicscontext3d_impl.h
+++ b/webkit/common/gpu/webgraphicscontext3d_impl.h
@@ -19,6 +19,7 @@ namespace gpu {
 namespace gles2 {
 class GLES2Interface;
 class GLES2ImplementationErrorMessageCallback;
+struct ContextCreationAttribHelper;
 }
 }
 
@@ -559,6 +560,12 @@ class WEBKIT_GPU_EXPORT WebGraphicsContext3DImpl
     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;