Remove reliance on linked in GL functions for assembling GLES interfaces

src/gpu/gl/win/GrGLCreateNativeInterface_win.cpp

Index: src/gpu/gl/win/GrGLCreateNativeInterface_win.cpp
diff --git a/src/gpu/gl/win/GrGLCreateNativeInterface_win.cpp b/src/gpu/gl/win/GrGLCreateNativeInterface_win.cpp
index 7afa2e07625999930d161be0eb98a6edcf47d034..3aab86d28d1aa5c692db8a033853d4ddb9ef222e 100644
--- a/src/gpu/gl/win/GrGLCreateNativeInterface_win.cpp
+++ b/src/gpu/gl/win/GrGLCreateNativeInterface_win.cpp
@@ -12,17 +12,6 @@
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 
-#include <GL/gl.h>
-
-#define GET_PROC(F) functions->f ## F = (GrGL ## F ## Proc) get(ctx, "gl" #F)
-#define GET_PROC_SUFFIX(F, S) functions->f ## F = (GrGL ## F ## Proc) get(ctx, "gl" #F #S)
-#define GET_PROC_LOCAL(F) GrGL ## F ## Proc F = (GrGL ## F ## Proc) get(ctx, "gl" #F)
-
-#define GET_LINKED GET_PROC
-#define GET_LINKED_SUFFIX GET_PROC_SUFFIX
-
-#include "gl/GrGLAssembleGLESInterface.h"
-
 class AutoLibraryUnload {
 public:
     AutoLibraryUnload(const char* moduleName) {