Revert of Move SkGLContext and some GrGLInterface implementations to skgputest module

tools/gpu/gl/angle/GLContext_angle.h

Index: tools/gpu/gl/angle/GLContext_angle.h
diff --git a/tools/gpu/gl/angle/GLContext_angle.h b/tools/gpu/gl/angle/GLContext_angle.h
deleted file mode 100644
index 519ea6b5a3969eab32067eb726e04365da1d19bb..0000000000000000000000000000000000000000
--- a/tools/gpu/gl/angle/GLContext_angle.h
+++ /dev/null
@@ -1,30 +0,0 @@
-
-/*
- * Copyright 2012 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-#ifndef GLContext_angle_DEFINED
-#define GLContext_angle_DEFINED
-
-#include "gl/GLContext.h"
-
-namespace sk_gpu_test {
-
-/**
- * Creates a GrGLInterface for the currently ANGLE GL context currently bound in ANGLE's EGL
- * implementation.
- */
-const GrGLInterface* CreateANGLEGLInterface();
-
-#ifdef SK_BUILD_FOR_WIN
-/** Creates a GLContext backed by ANGLE's Direct3D backend. */
-GLContext* CreateANGLEDirect3DGLContext();
-#endif
-
-/** Creates a GLContext backed by ANGLE's OpenGL backend. */
-GLContext* CreateANGLEOpenGLGLContext();
-
-}  // namespace sk_gpu_test
-#endif