Add initial support for NV_path_rendering extension to gpu command buffer

gpu/command_buffer/common/gles2_cmd_ids_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 227 matching lines @@
   OP(AsyncTexImage2DCHROMIUM)                /* 479 */                \
   OP(WaitAsyncTexImage2DCHROMIUM)            /* 480 */            \
   OP(WaitAllAsyncTexImage2DCHROMIUM)         /* 481 */         \
   OP(DiscardFramebufferEXT)                  /* 482 */                  \
   OP(DiscardFramebufferEXTImmediate)         /* 483 */         \
   OP(LoseContextCHROMIUM)                    /* 484 */                    \
   OP(InsertSyncPointCHROMIUM)                /* 485 */                \
   OP(WaitSyncPointCHROMIUM)                  /* 486 */                  \
   OP(DrawBuffersEXT)                         /* 487 */                         \
   OP(DrawBuffersEXTImmediate)                /* 488 */                \
-  OP(DiscardBackbufferCHROMIUM)              /* 489 */
+  OP(DiscardBackbufferCHROMIUM)              /* 489 */              \
+  OP(MatrixMode)                             /* 490 */                             \
+  OP(LoadMatrixf)                            /* 491 */                            \
+  OP(LoadMatrixfImmediate)                   /* 492 */                   \
+  OP(LoadIdentity)                           /* 493 */
 
 enum CommandId {
   kStartPoint = cmd::kLastCommonId,  // All GLES2 commands start after this.
 #define GLES2_CMD_OP(name) k##name,
   GLES2_COMMAND_LIST(GLES2_CMD_OP)
 #undef GLES2_CMD_OP
   kNumCommands
 };
 
 #endif  // GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_IDS_AUTOGEN_H_