Offline screenshare quality test, plus loopback.

BUG=4171
R=mflodman@webrtc.org, pbos@webrtc.org, stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/34109004

Cr-Commit-Position: refs/heads/master@{#8408}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8408 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/video_coding/main/source/video_sender_unittest.cc

@@ -320,7 +320,8 @@ class TestVideoSenderWithVp8 : public TestVideoSender {
     const int width = 352;
     const int height = 288;
     generator_.reset(FrameGenerator::CreateFromYuvFile(
-        test::ResourcePath(input_video, "yuv").c_str(), width, height));
+        std::vector<std::string>(1, test::ResourcePath(input_video, "yuv")),
+        width, height, 1));
 
     codec_ = MakeVp8VideoCodec(width, height, 3);
     codec_.minBitrate = 10;