Fix checkdeps failure and Linux shared dbg-shlib build.

content/content_browser.gypi

 # Copyright (c) 2011 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.
 
 {
   'targets': [
     {
       'target_name': 'content_browser',
       'type': '<(library)',
       'dependencies': [
@@ skipping 121 matching lines @@
         'browser/tab_contents/tab_contents_observer.h',
         'browser/tab_contents/tab_contents_view.cc',
         'browser/tab_contents/tab_contents_view.h',
       ],
       'conditions': [
         ['OS=="win"', {
           'msvs_guid': '639DB58D-32C2-435A-A711-65A12F62E442',
         }],
         ['OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="solaris"', {
           'dependencies': [
+            # For FcLangSetAdd call in render_sandbox_host_linux.cc
+            '../build/linux/system.gyp:fontconfig',
             '../build/linux/system.gyp:gtk',
           ],
         }],
       ],
     },
   ],
 }