Removed SSRC knowledge from ViEEncoder.

webrtc/modules/video_coding/video_sender_unittest.cc

Index: webrtc/modules/video_coding/video_sender_unittest.cc
diff --git a/webrtc/modules/video_coding/video_sender_unittest.cc b/webrtc/modules/video_coding/video_sender_unittest.cc
index 7d4d06690f0910549f6d121df414af4825fec8b1..3a779ba30876eb6e88aac10f12022b75a3bedbb4 100644
--- a/webrtc/modules/video_coding/video_sender_unittest.cc
+++ b/webrtc/modules/video_coding/video_sender_unittest.cc
@@ -290,10 +290,6 @@ TEST_F(TestVideoSenderWithMockEncoder, TestIntraRequests) {
   EXPECT_EQ(-1, sender_->IntraFrameRequest(3));
   ExpectIntraRequest(-1);
   AddFrame();
-
-  EXPECT_EQ(-1, sender_->IntraFrameRequest(-1));
-  ExpectIntraRequest(-1);
-  AddFrame();
 }
 
 TEST_F(TestVideoSenderWithMockEncoder, TestIntraRequestsInternalCapture) {
@@ -313,7 +309,6 @@ TEST_F(TestVideoSenderWithMockEncoder, TestIntraRequestsInternalCapture) {
   EXPECT_EQ(0, sender_->IntraFrameRequest(2));
   // No requests expected since these indices are out of bounds.
   EXPECT_EQ(-1, sender_->IntraFrameRequest(3));
-  EXPECT_EQ(-1, sender_->IntraFrameRequest(-1));
 }
 
 TEST_F(TestVideoSenderWithMockEncoder, TestEncoderParametersForInternalSource) {