Reland of Adding backward compatibility header

webrtc/sdk/BUILD.gn

 # Copyright 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("../webrtc.gni")
 if (is_ios) {
@@ skipping 461 matching lines @@
       ":objc_ui",
       "//webrtc/system_wrappers:field_trial_default",
       "//webrtc/system_wrappers:metrics_default",
     ]
   }
 
   rtc_static_library("objc_corevideoframebuffer") {
     sources = [
       "objc/Framework/Classes/Video/corevideo_frame_buffer.cc",
       "objc/Framework/Classes/Video/corevideo_frame_buffer.h",
+
+      # TODO(mbonadei): remove this backward compatibility header
+      "objc/Framework/Classes/corevideo_frame_buffer.h",
     ]
 
     deps = [
       "../base:rtc_base_approved",
       "../common_video",
     ]
 
     if (!build_with_chromium && is_clang) {
       # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
@@ skipping 45 matching lines @@
       deps += [ "$rtc_libyuv_dir" ]
       public_deps = [
         "$rtc_libyuv_dir",
       ]
     } else {
       # Need to add a directory normally exported by libyuv.
       include_dirs = [ "$rtc_libyuv_dir/include" ]
     }
   }
 }