Extract bitrate allocation of spatial/temporal layers out of codec impl.

webrtc/modules/video_coding/codecs/vp8/test/vp8_impl_unittest.cc

Index: webrtc/modules/video_coding/codecs/vp8/test/vp8_impl_unittest.cc
diff --git a/webrtc/modules/video_coding/codecs/vp8/test/vp8_impl_unittest.cc b/webrtc/modules/video_coding/codecs/vp8/test/vp8_impl_unittest.cc
index 5616c92c4926b075887a469490cef5a3f743bda8..d0cc4b66ae9b248696bfa26fbc8b9b08c828be7f 100644
--- a/webrtc/modules/video_coding/codecs/vp8/test/vp8_impl_unittest.cc
+++ b/webrtc/modules/video_coding/codecs/vp8/test/vp8_impl_unittest.cc
@@ -16,6 +16,7 @@
 #include "webrtc/base/timeutils.h"
 #include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
 #include "webrtc/modules/video_coding/codecs/vp8/include/vp8.h"
+#include "webrtc/modules/video_coding/codecs/vp8/temporal_layers.h"
 #include "webrtc/test/frame_utils.h"
 #include "webrtc/test/gtest.h"
 #include "webrtc/test/testsupport/fileutils.h"
@@ -161,6 +162,7 @@ class TestVp8Impl : public ::testing::Test {
     codec_inst_.maxBitrate = 4000;
     codec_inst_.qpMax = 56;
     codec_inst_.codecSpecific.VP8.denoisingOn = true;
+    codec_inst_.codecSpecific.VP8.tl_factory = &tl_factory_;
 
     EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
               encoder_->InitEncode(&codec_inst_, 1, 1440));
@@ -201,6 +203,7 @@ class TestVp8Impl : public ::testing::Test {
   EncodedImage encoded_frame_;
   VideoFrame decoded_frame_;
   VideoCodec codec_inst_;
+  TemporalLayersFactory tl_factory_;
 };
 
 TEST_F(TestVp8Impl, EncoderParameterTest) {
@@ -215,6 +218,8 @@ TEST_F(TestVp8Impl, EncoderParameterTest) {
   codec_inst_.qpMax = 56;
   codec_inst_.codecSpecific.VP8.complexity = kComplexityNormal;
   codec_inst_.codecSpecific.VP8.numberOfTemporalLayers = 1;
+  codec_inst_.codecSpecific.VP8.tl_factory = &tl_factory_;
+
   // Calls before InitEncode().
   EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Release());
   int bit_rate = 300;