Revert 6107 "Adds a modified copy of talk/base to webrtc/base. I..."

This breaks Chromium FYI builds and prevent roll of webrtc/libjingle to Chrome.

http://chromegw.corp.google.com/i/chromium.webrtc.fyi/builders/Win%20Builder/builds/457


> Adds a modified copy of talk/base to webrtc/base. It is the first step in migrating talk/base to webrtc/base.
> 
> BUG=N/A
> R=andrew@webrtc.org, wu@webrtc.org
> 
> Review URL: https://webrtc-codereview.appspot.com/12199004

TBR=henrike@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/14479004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6116 4adac7df-926f-26a2-2b94-8c16560cd09d

tools/valgrind-webrtc/tsan_v2/suppressions.txt

@@ -13,9 +13,6 @@ race:webrtc/modules/audio_processing/aec/aec_rdft.c
 
 # libjingle_p2p_unittest
 # See https://code.google.com/p/webrtc/issues/detail?id=2079
-race:webrtc/base/messagequeue.cc
-race:webrtc/base/testclient.cc
-race:webrtc/base/virtualsocketserver.cc
 race:talk/base/messagequeue.cc
 race:talk/base/testclient.cc
 race:talk/base/virtualsocketserver.cc
@@ -23,10 +20,6 @@ race:talk/p2p/base/stunserver_unittest.cc
 
 # libjingle_unittest
 # See https://code.google.com/p/webrtc/issues/detail?id=2080
-race:webrtc/base/logging.cc
-race:webrtc/base/sharedexclusivelock_unittest.cc
-race:webrtc/base/signalthread_unittest.cc
-race:webrtc/base/thread.cc
 race:talk/base/logging.cc
 race:talk/base/sharedexclusivelock_unittest.cc
 race:talk/base/signalthread_unittest.cc