Restrict usage of mesa headers to targets that really need them

webkit/common/gpu/BUILD.gn

 # Copyright 2014 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.
 
 # GYP version: webkit/common/gpu/webkit_gpu.gyp:webkit_gpu
 component("gpu") {
   output_name = "webkit_gpu"
 
   sources = [
     "context_provider_in_process.cc",
@@ skipping 20 matching lines @@
     "//cc",
     "//gpu/command_buffer/common",
     "//gpu/command_buffer/service",
     "//gpu/command_buffer/client:gles2_c_lib",
     "//gpu/command_buffer/client:gles2_implementation",
     "//gpu/command_buffer/client:gl_in_process_context",
     "//gpu/skia_bindings",
     "//skia",
     "//third_party/WebKit/public:blink_minimal",
     "//third_party/angle:translator",
-    "//ui/gl",
     "//ui/gfx",
     "//ui/gfx/geometry",
   ]
 }