Revert of Refactor context creation parameters into a struct.

ui/gl/gl_context.h

Index: ui/gl/gl_context.h
diff --git a/ui/gl/gl_context.h b/ui/gl/gl_context.h
index 542940c7683894bb857e311f97bbb53cf0102583..ebc98faa88667c0317ab0bcb8f8bf107d3458b3d 100644
--- a/ui/gl/gl_context.h
+++ b/ui/gl/gl_context.h
@@ -33,12 +33,6 @@
 class GPUTimingClient;
 struct GLVersionInfo;
 
-struct GLContextAttribs {
-  GpuPreference gpu_preference = PreferIntegratedGpu;
-  bool bind_generates_resource = true;
-  bool webgl_compatibility_context = false;
-};
-
 // Encapsulates an OpenGL context, hiding platform specific management.
 class GL_EXPORT GLContext : public base::RefCounted<GLContext> {
  public:
@@ -48,8 +42,8 @@
   // context can be made with other surface's of the same type. The compatible
   // surface is only needed for certain platforms like WGL, OSMesa and GLX. It
   // should be specific for all platforms though.
-  virtual bool Initialize(GLSurface* compatible_surface,
-                          const GLContextAttribs& attribs) = 0;
+  virtual bool Initialize(
+      GLSurface* compatible_surface, GpuPreference gpu_preference) = 0;
 
   // Makes the GL context and a surface current on the current thread.
   virtual bool MakeCurrent(GLSurface* surface) = 0;
@@ -205,7 +199,7 @@
 GL_EXPORT scoped_refptr<GLContext> InitializeGLContext(
     scoped_refptr<GLContext> context,
     GLSurface* compatible_surface,
-    const GLContextAttribs& attribs);
+    GpuPreference gpu_preference);
 
 }  // namespace gl