Move gflags usage to video_loopback.

gflags aren't used by the test environment and is an unnecessary
dependency. They're only used by the video_loopback target, so moving
them there.

R=mflodman@webrtc.org
BUG=3113

Review URL: https://webrtc-codereview.appspot.com/12379006

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6120 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/test/test_main.cc

@@ -10,13 +10,11 @@
 
 #include "testing/gtest/include/gtest/gtest.h"
 
-#include "webrtc/test/flags.h"
 #include "webrtc/test/run_tests.h"
 #include "webrtc/test/testsupport/fileutils.h"
 
 int main(int argc, char* argv[]) {
   ::testing::InitGoogleTest(&argc, argv);
-  webrtc::test::flags::Init(&argc, &argv);
   webrtc::test::SetExecutablePath(argv[0]);
 
   return webrtc::test::RunAllTests();