Delete unused YuvFrameGenerator class.

webrtc/media/BUILD.gn

 # Copyright (c) 2016 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/config/linux/pkg_config.gni")
 import("../build/webrtc.gni")
@@ skipping 71 matching lines @@
     "base/videocapturerfactory.h",
     "base/videocommon.cc",
     "base/videocommon.h",
     "base/videoframe.cc",
     "base/videoframe.h",
     "base/videoframefactory.cc",
     "base/videoframefactory.h",
     "base/videorenderer.h",
     "base/videosourcebase.cc",
     "base/videosourcebase.h",
-    "base/yuvframegenerator.cc",
-    "base/yuvframegenerator.h",
     "devices/videorendererfactory.h",
     "engine/nullwebrtcvideoengine.h",
     "engine/simulcast.cc",
     "engine/simulcast.h",
     "engine/webrtccommon.h",
     "engine/webrtcmediaengine.cc",
     "engine/webrtcmediaengine.h",
     "engine/webrtcvideocapturer.cc",
     "engine/webrtcvideocapturer.h",
     "engine/webrtcvideocapturerfactory.cc",
@@ skipping 93 matching lines @@
   deps += [
     "..:webrtc_common",
     "../base:rtc_base_approved",
     "../libjingle/xmllite",
     "../libjingle/xmpp",
     "../p2p",
     "../system_wrappers",
     "../voice_engine",
   ]
 }