Re-enable webrtcvoice/videoengine unittests.

TEST=try bots
BUG=
R=mallinath@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/7149004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5387 4adac7df-926f-26a2-2b94-8c16560cd09d

talk/libjingle_tests.gyp

@@ -288,8 +288,8 @@
         # Disabled because some tests fail.
         # TODO(ronghuawu): Reenable these tests.
         # 'media/devices/devicemanager_unittest.cc',
-        # 'media/webrtc/webrtcvideoengine_unittest.cc',
-        # 'media/webrtc/webrtcvoiceengine_unittest.cc',
+        'media/webrtc/webrtcvideoengine_unittest.cc',
+        'media/webrtc/webrtcvoiceengine_unittest.cc',
       ],
       'conditions': [
         ['OS=="win"', {

tools/valgrind-webrtc/tsan/suppressions.txt

@@ -38,6 +38,15 @@
   fun:webrtc::Trace::set_level_filter
   ...
 }
+{
+  Trace function
+  ThreadSanitizer:Race
+  fun:webrtc::TraceImpl::WriteToFile
+  fun:webrtc::TraceImpl::Process
+  fun:webrtc::TraceImpl::Run
+  fun:webrtc::ThreadPosix::Run
+  fun:StartThread
+}
 {
   Test posix socket HasIncoming
   ThreadSanitizer:Race