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 7c359b9f5982db9a2666b70548e651b5e503423d..00c2edd156b51c77711eb7c7ce91d525ad543cd6 100644
--- a/gpu/command_buffer/common/gles2_cmd_ids_autogen.h
+++ b/gpu/command_buffer/common/gles2_cmd_ids_autogen.h
@@ -246,7 +246,10 @@
   OP(DrawBuffersEXT)                         /* 487 */                         \
   OP(DrawBuffersEXTImmediate)                /* 488 */                \
   OP(DiscardBackbufferCHROMIUM)              /* 489 */              \
-  OP(ScheduleOverlayPlaneCHROMIUM)           /* 490 */
+  OP(ScheduleOverlayPlaneCHROMIUM)           /* 490 */           \
+  OP(MatrixLoadfCHROMIUM)                    /* 491 */                    \
+  OP(MatrixLoadfCHROMIUMImmediate)           /* 492 */           \
+  OP(MatrixLoadIdentityCHROMIUM)             /* 493 */
 
 enum CommandId {
   kStartPoint = cmd::kLastCommonId,  // All GLES2 commands start after this.