Extract simulcast rate allocation outside of video encoder.

webrtc/modules/video_coding/BUILD.gn

 # Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import("../../build/webrtc.gni")
 
@@ skipping 90 matching lines @@
     "utility/frame_dropper.h",
     "utility/h264_bitstream_parser.cc",
     "utility/h264_bitstream_parser.h",
     "utility/ivf_file_writer.cc",
     "utility/ivf_file_writer.h",
     "utility/moving_average.h",
     "utility/qp_parser.cc",
     "utility/qp_parser.h",
     "utility/quality_scaler.cc",
     "utility/quality_scaler.h",
+    "utility/simulcast_rate_allocator.cc",
+    "utility/simulcast_rate_allocator.h",
     "utility/vp8_header_parser.cc",
     "utility/vp8_header_parser.h",
   ]
 
   if (is_clang) {
     # Suppress warnings from Chrome's Clang plugins.
     # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
     suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
   }
 
@@ skipping 195 matching lines @@
       # Suppress warnings from Chrome's Clang plugins.
       # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
     }
 
     deps = [
       "../../test:test_support",
     ]
   }
 }