Make ShareGroup thread safe

gpu/command_buffer/build_gles2_cmd_buffer.py

Index: gpu/command_buffer/build_gles2_cmd_buffer.py
diff --git a/gpu/command_buffer/build_gles2_cmd_buffer.py b/gpu/command_buffer/build_gles2_cmd_buffer.py
index 64e3240fcc94c2484fb72d1c908ef0b1e7b8354e..c65805340669821742e013fc17e4a01e2b8dc3dc 100755
--- a/gpu/command_buffer/build_gles2_cmd_buffer.py
+++ b/gpu/command_buffer/build_gles2_cmd_buffer.py
@@ -2761,8 +2761,8 @@ class GENnHandler(TypeHandler):
     for arg in func.GetOriginalArgs():
       arg.WriteClientSideValidationCode(file, func)
     code = """  GPU_CLIENT_SINGLE_THREAD_CHECK();
-  id_handlers_[id_namespaces::k%(resource_types)s]->
-      MakeIds(0, %(args)s);
+  GetIdHandler(id_namespaces::k%(resource_types)s)->
+      MakeIds(this, 0, %(args)s);
   helper_->%(name)sImmediate(%(args)s);
 %(log_code)s
 }
@@ -3011,8 +3011,9 @@ TEST_F(%(test_name)s, %(name)sInvalidArgs%(arg_index)d_%(value_index)d) {
     for arg in func.GetOriginalArgs():
       arg.WriteClientSideValidationCode(file, func)
     file.Write("  GLuint client_id;\n")
-    file.Write("  id_handlers_[id_namespaces::kProgramsAndShaders]->\n")
-    file.Write("      MakeIds(0, 1, &client_id);\n")
+    file.Write(
+        "  GetIdHandler(id_namespaces::kProgramsAndShaders)->\n")
+    file.Write("      MakeIds(this, 0, 1, &client_id);\n")
     file.Write("  helper_->%s(%s);\n" %
                (func.name, func.MakeCmdArgString("")))
     file.Write('  GPU_CLIENT_LOG("returned " << client_id);\n')