Use EXT_direct_state_access for path matrix manipulation

src/gpu/gl/mesa/GrGLCreateMesaInterface.cpp

Index: src/gpu/gl/mesa/GrGLCreateMesaInterface.cpp
diff --git a/src/gpu/gl/mesa/GrGLCreateMesaInterface.cpp b/src/gpu/gl/mesa/GrGLCreateMesaInterface.cpp
index 24218b02a7c08694113e3affc79706b20f9815c0..ea8026eb18c2160dee91ff984ef365a16d49a21c 100644
--- a/src/gpu/gl/mesa/GrGLCreateMesaInterface.cpp
+++ b/src/gpu/gl/mesa/GrGLCreateMesaInterface.cpp
@@ -118,10 +118,11 @@ const GrGLInterface* GrGLCreateMesaInterface() {
     GR_GL_GET_PROC(GetUniformLocation);
     GR_GL_GET_PROC(LineWidth);
     GR_GL_GET_PROC(LinkProgram);
-    GR_GL_GET_PROC(LoadIdentity);
-    GR_GL_GET_PROC(LoadMatrixf);
-    GR_GL_GET_PROC(MatrixMode);
     GR_GL_GET_PROC(MapBuffer);
+    if (extensions.has("GL_EXT_direct_state_access")) {
+        GR_GL_GET_PROC_SUFFIX(MatrixLoadf, EXT);
+        GR_GL_GET_PROC_SUFFIX(MatrixLoadIdentity, EXT);
+    }
     GR_GL_GET_PROC(PixelStorei);
     GR_GL_GET_PROC(ReadBuffer);
     GR_GL_GET_PROC(ReadPixels);