Use BytesConsumer in BodyStreamBuffer

third_party/WebKit/Source/modules/modules.gypi

 {
   'includes': [
     '../core/core_generated.gypi',
     'modules_generated.gypi',
   ],
   'variables': {
     # Experimental hooks for embedder to provide extra IDL and source files.
     #
     # Note: this is not a supported API. If you rely on this, you will be broken
     # from time to time as the code generator changes in backward incompatible
@@ skipping 1075 matching lines @@
       'fetch/DataConsumerHandleUtil.h',
       'fetch/Body.cpp',
       'fetch/Body.h',
       'fetch/BodyStreamBuffer.cpp',
       'fetch/BodyStreamBuffer.h',
       'fetch/BytesConsumer.cpp',
       'fetch/BytesConsumer.h',
       'fetch/BytesConsumerForDataConsumerHandle.cpp',
       'fetch/BytesConsumerForDataConsumerHandle.h',
       'fetch/CrossThreadHolder.h',
-      'fetch/DataConsumerTee.cpp',
-      'fetch/DataConsumerTee.h',
       'fetch/FetchBlobDataConsumerHandle.cpp',
       'fetch/FetchBlobDataConsumerHandle.h',
       'fetch/FetchDataConsumerHandle.cpp',
       'fetch/FetchDataConsumerHandle.h',
       'fetch/FetchDataLoader.cpp',
       'fetch/FetchDataLoader.h',
       'fetch/FetchFormDataConsumerHandle.cpp',
       'fetch/FetchFormDataConsumerHandle.h',
       'fetch/FetchHeaderList.cpp',
       'fetch/FetchHeaderList.h',
@@ skipping 446 matching lines @@
       'accessibility/testing/InternalsAccessibility.idl',
       'navigatorcontentutils/testing/InternalsNavigatorContentUtils.idl',
       'peerconnection/testing/InternalsRTCCertificate.idl',
       'serviceworkers/testing/InternalsServiceWorker.idl',
       'speech/testing/InternalsSpeechSynthesis.idl',
       'vibration/testing/InternalsVibration.idl',
       'webaudio/testing/InternalsWebAudio.idl',
     ],
   },
 }