Fix line endings in build/config/gcc/BUILD.gn

R=scottmg@chromium.org
TBR=scottmg@chromium.org

Review URL: https://codereview.chromium.org/280173005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@269836 0039d316-1c4b-4281-b951-d872f2087c98

build/config/gcc/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.
-
-# This config causes functions not to be automatically exported from shared
-# libraries. By default, all symbols are exported but this means there are
-# lots of exports that slow everything down. In general we explicitly mark
-# which functiosn we want to export from components.
-#
-# Some third_party code assumes all functions are exported so this is separated
-# into its own config so such libraries can remove this config to make symbols
-# public again.
-#
-# See http://gcc.gnu.org/wiki/Visibility
-config("symbol_visibility_hidden") {
-  # Note that -fvisibility-inlines-hidden is set globally in the compiler
-  # config since that can almost always be applied.
-  cflags = [ "-fvisibility=hidden" ]
-}
+# 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.
+
+# This config causes functions not to be automatically exported from shared
+# libraries. By default, all symbols are exported but this means there are
+# lots of exports that slow everything down. In general we explicitly mark
+# which functiosn we want to export from components.
+#
+# Some third_party code assumes all functions are exported so this is separated
+# into its own config so such libraries can remove this config to make symbols
+# public again.
+#
+# See http://gcc.gnu.org/wiki/Visibility
+config("symbol_visibility_hidden") {
+  # Note that -fvisibility-inlines-hidden is set globally in the compiler
+  # config since that can almost always be applied.
+  cflags = [ "-fvisibility=hidden" ]
+}