Use EXT_direct_state_access for path matrix manipulation

include/gpu/gl/GrGLInterface.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLInterface_DEFINED
 #define GrGLInterface_DEFINED
 
@@ skipping 212 matching lines @@
         GLPtr<GrGLGetUniformLocationProc> fGetUniformLocation;
         GLPtr<GrGLInsertEventMarkerProc> fInsertEventMarker;
         GLPtr<GrGLInvalidateBufferDataProc> fInvalidateBufferData;
         GLPtr<GrGLInvalidateBufferSubDataProc> fInvalidateBufferSubData;
         GLPtr<GrGLInvalidateFramebufferProc> fInvalidateFramebuffer;
         GLPtr<GrGLInvalidateSubFramebufferProc> fInvalidateSubFramebuffer;
         GLPtr<GrGLInvalidateTexImageProc> fInvalidateTexImage;
         GLPtr<GrGLInvalidateTexSubImageProc> fInvalidateTexSubImage;
         GLPtr<GrGLLineWidthProc> fLineWidth;
         GLPtr<GrGLLinkProgramProc> fLinkProgram;
-        GLPtr<GrGLLoadIdentityProc> fLoadIdentity;
-        GLPtr<GrGLLoadMatrixfProc> fLoadMatrixf;
         GLPtr<GrGLMapBufferProc> fMapBuffer;
         GLPtr<GrGLMapBufferSubDataProc> fMapBufferSubData;
         GLPtr<GrGLMapTexSubImage2DProc> fMapTexSubImage2D;
-        GLPtr<GrGLMatrixModeProc> fMatrixMode;
+        GLPtr<GrGLMatrixLoadfProc> fMatrixLoadf;
+        GLPtr<GrGLMatrixLoadIdentityProc> fMatrixLoadIdentity;
         GLPtr<GrGLPixelStoreiProc> fPixelStorei;
         GLPtr<GrGLPopGroupMarkerProc> fPopGroupMarker;
         GLPtr<GrGLPushGroupMarkerProc> fPushGroupMarker;
         GLPtr<GrGLQueryCounterProc> fQueryCounter;
         GLPtr<GrGLReadBufferProc> fReadBuffer;
         GLPtr<GrGLReadPixelsProc> fReadPixels;
         GLPtr<GrGLRenderbufferStorageProc> fRenderbufferStorage;
 
         //  On OpenGL ES there are multiple incompatible extensions that add support for MSAA
         //  and ES3 adds MSAA support to the standard. On an ES3 driver we may still use the
@@ skipping 118 matching lines @@
     } fFunctions;
 
     // Per-GL func callback
 #if GR_GL_PER_GL_FUNC_CALLBACK
     GrGLInterfaceCallbackProc fCallback;
     GrGLInterfaceCallbackData fCallbackData;
 #endif
 };
 
 #endif