Revert of Remove {media,p2p,pc,xmllite,xmpp}_tests.gypi files.

webrtc/libjingle/xmpp/xmpp.gyp

Index: webrtc/libjingle/xmpp/xmpp.gyp
diff --git a/webrtc/libjingle/xmpp/xmpp.gyp b/webrtc/libjingle/xmpp/xmpp.gyp
index 4dc75f7b52e89df4841c383dd128fd5edb321338..6b738e7f3cfbd9aa7564bc7a77df95767ab939e1 100644
--- a/webrtc/libjingle/xmpp/xmpp.gyp
+++ b/webrtc/libjingle/xmpp/xmpp.gyp
@@ -140,36 +140,6 @@
           ],
         }],
       ],
-    },
-  ],  # targets
-  'conditions': [
-    ['include_tests==1', {
-      'targets' : [
-        {
-          'target_name': 'rtc_xmpp_unittest',
-          'type': 'none',
-          'direct_dependent_settings': {
-            'sources': [
-              'fakexmppclient.h',
-              'hangoutpubsubclient_unittest.cc',
-              'jid_unittest.cc',
-              'mucroomconfigtask_unittest.cc',
-              'mucroomdiscoverytask_unittest.cc',
-              'mucroomlookuptask_unittest.cc',
-              'mucroomuniquehangoutidtask_unittest.cc',
-              'pingtask_unittest.cc',
-              'pubsubclient_unittest.cc',
-              'pubsubtasks_unittest.cc',
-              'util_unittest.cc',
-              'util_unittest.h',
-              'xmppengine_unittest.cc',
-              'xmpplogintask_unittest.cc',
-              'xmppstanzaparser_unittest.cc',
-            ],
-          },
-        },  # target rtc_xmpp_unittest
-      ],  # targets
-    }],  # include_tests==1
-  ],  # conditions
+    }],
 }