Add initial support for NV_path_rendering extension to gpu command buffer

gpu/GLES2/gl2extchromium.h

 // Copyright (c) 2012 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 contains Chromium-specific GLES2 extensions declarations.
 
 #ifndef GPU_GLES2_GL2EXTCHROMIUM_H_
 #define GPU_GLES2_GL2EXTCHROMIUM_H_
 
 #include <GLES2/gl2.h>
@@ skipping 699 matching lines @@
 
 /* GL_CHROMIUM_sync_query */
 #ifndef GL_CHROMIUM_sync_query
 #define GL_CHROMIUM_sync_query 1
 
 #ifndef GL_COMMANDS_COMPLETED_CHROMIUM
 #define GL_COMMANDS_COMPLETED_CHROMIUM 0x84F7
 #endif
 #endif  /* GL_CHROMIUM_sync_query */
 
+#ifndef GL_CHROMIUM_path_rendering
+#define GL_CHROMIUM_path_rendering 1
+
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY
+    glMatrixLoadfCHROMIUM(GLenum mode, const GLfloat* m);
+GL_APICALL void GL_APIENTRY glMatrixLoadIdentityCHROMIUM(GLenum mode);
+#endif
+
+typedef void(GL_APIENTRYP PFNGLMATRIXLOADFCHROMIUMPROC)(GLenum matrixMode,
+                                                        const GLfloat* m);
+typedef void(GL_APIENTRYP PFNGLMATRIXLOADIDENTITYCHROMIUMPROC)(
+    GLenum matrixMode);
+
+#endif /* GL_CHROMIUM_path_rendering */
+
 #ifdef __cplusplus
 }
 #endif
 
 #endif  // GPU_GLES2_GL2EXTCHROMIUM_H_