Move definitions of GrGL basic types (e.g. GrGLenum) to their own header.

src/gpu/gl/GrGLVertexArray.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLVertexArray_DEFINED
 #define GrGLVertexArray_DEFINED
 
 #include "GrTypesPriv.h"
 #include "gl/GrGLDefines.h"
-#include "gl/GrGLFunctions.h"
+#include "gl/GrGLTypes.h"
 #include "SkTArray.h"
 
 class GrGLVertexBuffer;
 class GrGLIndexBuffer;
 class GrGLGpu;
 
 struct GrGLAttribLayout {
     GrGLint     fCount;
     GrGLenum    fType;
     GrGLboolean fNormalized;
@@ skipping 136 matching lines @@
     void invalidateCachedState();
 
 private:
     GrGLuint                fID;
     GrGLAttribArrayState    fAttribArrays;
     GrGLuint                fIndexBufferID;
     bool                    fIndexBufferIDIsValid;
 };
 
 #endif