Add a bunch of ES3 enums to the validator.

gpu/command_buffer/client/gles2_implementation_unittest_autogen.h

 // Copyright 2014 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.
 
 // This file is auto-generated from
 // gpu/command_buffer/build_gles2_cmd_buffer.py
 // It's formatted by clang-format using chromium coding style:
 //    clang-format -i -style=chromium filename
 // DO NOT EDIT!
 
@@ skipping 901 matching lines @@
 
 TEST_F(GLES2ImplementationTest, GetInternalformativ) {
   struct Cmds {
     cmds::GetInternalformativ cmd;
   };
   typedef cmds::GetInternalformativ::Result::Type ResultType;
   ResultType result = 0;
   Cmds expected;
   ExpectedMemoryInfo result1 =
       GetExpectedResultMemory(sizeof(uint32_t) + sizeof(ResultType));
-  expected.cmd.Init(123, GL_RGBA4, GL_RENDERBUFFER_RED_SIZE, 4, result1.id,
+  expected.cmd.Init(123, GL_RGBA4, GL_NUM_SAMPLE_COUNTS, 4, result1.id,
                     result1.offset);
   EXPECT_CALL(*command_buffer(), OnFlush())
       .WillOnce(SetMemory(result1.ptr, SizedResultHelper<ResultType>(1)))
       .RetiresOnSaturation();
-  gl_->GetInternalformativ(123, GL_RGBA4, GL_RENDERBUFFER_RED_SIZE, 4, &result);
+  gl_->GetInternalformativ(123, GL_RGBA4, GL_NUM_SAMPLE_COUNTS, 4, &result);
   EXPECT_EQ(0, memcmp(&expected, commands_, sizeof(expected)));
   EXPECT_EQ(static_cast<ResultType>(1), result);
 }
 
 TEST_F(GLES2ImplementationTest, GetProgramiv) {
   struct Cmds {
     cmds::GetProgramiv cmd;
   };
   typedef cmds::GetProgramiv::Result::Type ResultType;
   ResultType result = 0;
@@ skipping 2143 matching lines @@
   struct Cmds {
     cmds::MatrixLoadIdentityCHROMIUM cmd;
   };
   Cmds expected;
   expected.cmd.Init(GL_PATH_PROJECTION_CHROMIUM);
 
   gl_->MatrixLoadIdentityCHROMIUM(GL_PATH_PROJECTION_CHROMIUM);
   EXPECT_EQ(0, memcmp(&expected, commands_, sizeof(expected)));
 }
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_UNITTEST_AUTOGEN_H_