Add OpenGL 4.4 support to SkNativeGLContext and GrGLCreateNativeInterface android versions.

include/gpu/gl/GrGLInterface.h

Index: include/gpu/gl/GrGLInterface.h
===================================================================
--- include/gpu/gl/GrGLInterface.h	(revision 10932)
+++ include/gpu/gl/GrGLInterface.h	(working copy)
@@ -217,7 +217,10 @@
     GLPtr<GrGLGetUniformLocationProc> fGetUniformLocation;
     GLPtr<GrGLLineWidthProc> fLineWidth;
     GLPtr<GrGLLinkProgramProc> fLinkProgram;
+    GLPtr<GrGLLoadIdentityProc> fLoadIdentity;

[bsalomon, 2013/08/30 20:55:03]

We now actually check for these in validate() regardless of NV_pr status so
moved them up into their rightful place from below.

+    GLPtr<GrGLLoadMatrixfProc> fLoadMatrixf;
     GLPtr<GrGLMapBufferProc> fMapBuffer;
+    GLPtr<GrGLMatrixModeProc> fMatrixMode;
     GLPtr<GrGLPixelStoreiProc> fPixelStorei;
     GLPtr<GrGLQueryCounterProc> fQueryCounter;
     GLPtr<GrGLReadBufferProc> fReadBuffer;
@@ -268,9 +271,6 @@
     // 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<GrGLMatrixModeProc> fMatrixMode;
-    GLPtr<GrGLLoadIdentityProc> fLoadIdentity;
-    GLPtr<GrGLLoadMatrixfProc> fLoadMatrixf;
     GLPtr<GrGLPathCommandsProc> fPathCommands;
     GLPtr<GrGLPathCoordsProc> fPathCoords;
     GLPtr<GrGLPathSubCommandsProc> fPathSubCommands;