Break //ui/gl/ dependency on //ui/ozone.

ui/ozone/gl/BUILD.gn

Index: ui/ozone/gl/BUILD.gn
diff --git a/ui/ozone/gl/BUILD.gn b/ui/ozone/gl/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..a918481895a62ecc97b7dee8a911facf56bb8911
--- /dev/null
+++ b/ui/ozone/gl/BUILD.gn
@@ -0,0 +1,19 @@
+# Copyright 2016 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.
+
+component("gl") {
+  sources = [
+    "gl_image_ozone_native_pixmap.cc",
+    "gl_image_ozone_native_pixmap.h",
+    "ozone_gl_export.h",
+  ]
+
+  defines = [ "OZONE_GL_IMPLEMENTATION" ]
+
+  deps = [
+    "//ui/gfx",
+    "//ui/gl",
+    "//ui/ozone:ozone_base",
+  ]
+}