Reland of move {media,p2p,pc,xmllite,xmpp}_tests.gypi files.

webrtc/p2p/p2p.gyp

Index: webrtc/p2p/p2p.gyp
diff --git a/webrtc/p2p/p2p.gyp b/webrtc/p2p/p2p.gyp
index 9812a0acb7553ad8cf6c273ec582fad9b5883961..5c9a575f8f24b13e6633aa0bf57efeb04352c4cf 100644
--- a/webrtc/p2p/p2p.gyp
+++ b/webrtc/p2p/p2p.gyp
@@ -145,6 +145,52 @@
       'sources': [
         'stunprober/main.cc',
       ],
-    }],
+    },
+  ],  # targets
+  'conditions': [
+    ['include_tests==1', {
+      'targets' : [
+        {
+          'target_name': 'rtc_p2p_unittest',
+          'type': 'none',
+          'direct_dependent_settings': {
+            'sources': [
+              'base/dtlstransportchannel_unittest.cc',
+              'base/faketransportcontroller.h',
+              'base/p2ptransportchannel_unittest.cc',
+              'base/port_unittest.cc',
+              'base/pseudotcp_unittest.cc',
+              'base/relayport_unittest.cc',
+              'base/relayserver_unittest.cc',
+              'base/stun_unittest.cc',
+              'base/stunport_unittest.cc',
+              'base/stunrequest_unittest.cc',
+              'base/stunserver_unittest.cc',
+              'base/testrelayserver.h',
+              'base/teststunserver.h',
+              'base/testturnserver.h',
+              'base/transport_unittest.cc',
+              'base/transportcontroller_unittest.cc',
+              'base/transportdescriptionfactory_unittest.cc',
+              'base/turnport_unittest.cc',
+              'client/fakeportallocator.h',
+              'client/portallocator_unittest.cc',
+              'stunprober/stunprober_unittest.cc',
+            ],
+            'conditions': [
+              ['use_quic==1', {
+                'sources': [
+                  'quic/quicconnectionhelper_unittest.cc',
+                  'quic/quicsession_unittest.cc',
+                  'quic/quictransportchannel_unittest.cc',
+                  'quic/reliablequicstream_unittest.cc',
+                ],
+              }],
+            ],
+          },
+        },  # target rtc_p2p_unittest
+      ],  # targets
+    }],  # include_tests==1
+  ],  # conditions
 }