Refactor Call-based tests.

Greatly reduces duplication of constants and setup code for tests based
on the new webrtc::Call APIs. It also makes it significantly easier to
convert sender-only to end-to-end tests as they share more code.

BUG=3035
R=kjellander@webrtc.org, stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/17789004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6551 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/webrtc_tests.gypi b/webrtc/webrtc_tests.gypi
index 3c1dca6..85a7e73 100644
--- a/webrtc/webrtc_tests.gypi
+++ b/webrtc/webrtc_tests.gypi
@@ -46,7 +46,7 @@
       'type': '<(gtest_target_type)',
       'sources': [
         'video/bitrate_estimator_tests.cc',
-        'video/call_tests.cc',
+        'video/end_to_end_tests.cc',
         'video/send_statistics_proxy_unittest.cc',
         'video/video_send_stream_tests.cc',
         'test/common_unittest.cc',