Adding third_party/openh264/src, build files and unittests

content/content_tests.gypi

 # Copyright (c) 2013 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.
 
 {
   'variables': {
     'layouttest_support_content_sources': [
       'public/test/layouttest_support.h',
       'public/test/nested_message_pump_android.cc',
       'public/test/nested_message_pump_android.h',
@@ skipping 1224 matching lines @@
           'dependencies': [
             '../ui/ozone/ozone.gyp:ozone',
             '../ui/ozone/ozone.gyp:ozone_base',
           ],
         }],
         ['OS == "mac"', {
           'sources': [ '<@(content_unittests_mac_sources)' ],
           'dependencies': [
             '../third_party/boringssl/boringssl.gyp:boringssl',
           ],
         }],

[hbos_chromium, 2015/10/29 14:28:26]

Note: conditionally part of target 'content_unittests'

+        ['build_openh264==1', {
+          'sources': [
+            'browser/media/openh264_unittests.cc',
+          ],
+          'dependencies': [
+            '../third_party/openh264/testing/openh264_testing.gyp:openh264_testing',
+          ],
+        }],
       ],
     },
   ],
   'conditions': [
     ['test_isolation_mode != "noop"', {
       'targets': [
         {
           'target_name': 'content_browsertests_run',
           'type': 'none',
           'dependencies': [
@@ skipping 942 matching lines @@
                   'content_unittests_apk.isolate',
                 ],
               },
             ],
           },
         ],
       ],
     }],
   ],
 }