Add initial support for NV_path_rendering extension to gpu command buffer

gpu/command_buffer/common/gles2_cmd_ids_autogen.h

Index: gpu/command_buffer/common/gles2_cmd_ids_autogen.h
diff --git a/gpu/command_buffer/common/gles2_cmd_ids_autogen.h b/gpu/command_buffer/common/gles2_cmd_ids_autogen.h
index f63df0ea461a613ae3b7ea7020ad71a7c3d8ac47..f8b51e55386632d4f5553e34ecf3e01a8090ec30 100644
--- a/gpu/command_buffer/common/gles2_cmd_ids_autogen.h
+++ b/gpu/command_buffer/common/gles2_cmd_ids_autogen.h
@@ -245,7 +245,11 @@
   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.