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

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6107 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/webrtc.gyp

@@ -19,6 +19,7 @@
   ],
   'variables': {
     'webrtc_all_dependencies': [
+      'base/base.gyp:*',
       'common_audio/common_audio.gyp:*',
       'common_video/common_video.gyp:*',
       'modules/modules.gyp:*',
@@ -39,6 +40,7 @@
       'conditions': [
         ['include_tests==1', {
           'dependencies': [
+            'base/base_tests.gyp:*',
             'common_video/common_video_unittests.gyp:*',
             'system_wrappers/source/system_wrappers_tests.gyp:*',
             'test/metrics.gyp:*',