Make it possible to use OSMesa on Android

ui/gl/gl_implementation_linux.h

Index: ui/gl/gl_implementation_linux.h
diff --git a/ui/gl/gl_implementation_linux.h b/ui/gl/gl_implementation_linux.h
deleted file mode 100644
index 1c32d4cbf6573e78dc0e2483b295c1ebf21c18b5..0000000000000000000000000000000000000000
--- a/ui/gl/gl_implementation_linux.h
+++ /dev/null
@@ -1,14 +0,0 @@
-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/files/file_path.h"
-#include "base/native_library.h"
-
-namespace gfx {
-
-bool InitializeStaticGLBindingsOSMesaGL();
-base::NativeLibrary LoadLibrary(const char* filename);
-base::NativeLibrary LoadLibrary(const base::FilePath& filename);
-
-}  // namespace gfx