Add gpu support for glVertexAttrb1f, 2fv, and 3fv

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 293 matching lines @@
         GLPtr<GrGLUniform4iProc> fUniform4i;
         GLPtr<GrGLUniform4fvProc> fUniform4fv;
         GLPtr<GrGLUniform4ivProc> fUniform4iv;
         GLPtr<GrGLUniformMatrix2fvProc> fUniformMatrix2fv;
         GLPtr<GrGLUniformMatrix3fvProc> fUniformMatrix3fv;
         GLPtr<GrGLUniformMatrix4fvProc> fUniformMatrix4fv;
         GLPtr<GrGLUnmapBufferProc> fUnmapBuffer;
         GLPtr<GrGLUnmapBufferSubDataProc> fUnmapBufferSubData;
         GLPtr<GrGLUnmapTexSubImage2DProc> fUnmapTexSubImage2D;
         GLPtr<GrGLUseProgramProc> fUseProgram;
+        GLPtr<GrGLVertexAttrib1fProc> fVertexAttrib1f;
+        GLPtr<GrGLVertexAttrib2fvProc> fVertexAttrib2fv;
+        GLPtr<GrGLVertexAttrib3fvProc> fVertexAttrib3fv;
         GLPtr<GrGLVertexAttrib4fvProc> fVertexAttrib4fv;
         GLPtr<GrGLVertexAttribPointerProc> fVertexAttribPointer;
         GLPtr<GrGLViewportProc> fViewport;
 
         // Experimental: Functions for GL_NV_path_rendering. These will be
         // alphabetized with the above functions once this is fully supported
         // (and functions we are unlikely to use will possibly be omitted).
         GLPtr<GrGLGetProgramResourceLocationProc> fGetProgramResourceLocation;
         GLPtr<GrGLPathCommandsProc> fPathCommands;
         GLPtr<GrGLPathCoordsProc> fPathCoords;
@@ skipping 26 matching lines @@
 #if GR_GL_PER_GL_FUNC_CALLBACK
     GrGLInterfaceCallbackProc fCallback;
     GrGLInterfaceCallbackData fCallbackData;
 #endif
 
     // This exists for internal testing.
     virtual void abandon() const {}
 };
 
 #endif