Remove webrtc::Config from ViEChannelGroup.

webrtc/video_engine/encoder_state_feedback_unittest.cc

Index: webrtc/video_engine/encoder_state_feedback_unittest.cc
diff --git a/webrtc/video_engine/encoder_state_feedback_unittest.cc b/webrtc/video_engine/encoder_state_feedback_unittest.cc
index 07e1990481f328ba813ad3b7e5c879d96d62327e..4102367f128f10eeffabd41d8714cc35f7642677 100644
--- a/webrtc/video_engine/encoder_state_feedback_unittest.cc
+++ b/webrtc/video_engine/encoder_state_feedback_unittest.cc
@@ -31,7 +31,7 @@ namespace webrtc {
 class MockVieEncoder : public ViEEncoder {
  public:
   explicit MockVieEncoder(ProcessThread* process_thread, PacedSender* pacer)
-      : ViEEncoder(1, 1, config_, *process_thread, pacer, NULL, NULL, false) {}
+      : ViEEncoder(1, 1, *process_thread, pacer, NULL, NULL, false) {}
   ~MockVieEncoder() {}
 
   MOCK_METHOD1(OnReceivedIntraFrameRequest,
@@ -42,8 +42,6 @@ class MockVieEncoder : public ViEEncoder {
                void(uint32_t ssrc, uint64_t picture_id));
   MOCK_METHOD2(OnLocalSsrcChanged,
                void(uint32_t old_ssrc, uint32_t new_ssrc));
-
-  const Config config_;
 };
 
 class VieKeyRequestTest : public ::testing::Test {