GPU context creation code duplication cleanup

gpu/command_buffer/common/gles2_cmd_utils.h

Index: gpu/command_buffer/common/gles2_cmd_utils.h
diff --git a/gpu/command_buffer/common/gles2_cmd_utils.h b/gpu/command_buffer/common/gles2_cmd_utils.h
index 15f3b57e0a5516cef7ddf1882b95c00c53efa832..4d493a05a9ee9b8ccde8a5dddce286a736a5b605 100644
--- a/gpu/command_buffer/common/gles2_cmd_utils.h
+++ b/gpu/command_buffer/common/gles2_cmd_utils.h
@@ -200,7 +200,7 @@ class GLES2_UTILS_EXPORT ContextCreationAttribHelper {
  public:
   ContextCreationAttribHelper();
 
-  void Serialize(std::vector<int32_t>* attribs);
+  void Serialize(std::vector<int32_t>* attribs) const;
   bool Parse(const std::vector<int32_t>& attribs);
 
   // -1 if invalid or unspecified.
@@ -213,7 +213,6 @@ class GLES2_UTILS_EXPORT ContextCreationAttribHelper {
   int32_t samples_;
   int32_t sample_buffers_;
   bool buffer_preserved_;
-  bool share_resources_;
   bool bind_generates_resource_;
   bool fail_if_major_perf_caveat_;
   bool lose_context_when_out_of_memory_;