Fix component=shared_library build for Ozone when using Pango.

CL 60273009 fixed the build issues with using Pango and Ozone.
CL 78783004 fixed component=shared_library build for ozone,
but build for chrome+ozone with component=shared_library and
Pango is still broken. This patch fixes the build now.

BUG=

Review URL: https://codereview.chromium.org/85303003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237520 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237520