Remove FileSystemWritableFileStream::Close

This method just overrode the identically behaving implementation from
the base WritableStream class.

Intent to Implement and Ship thread here:
https://groups.google.com/a/chromium.org/g/blink-dev/c/98OnGPp1_M8/m/HK4lRghLAgAJ

Bug: 1163351
Change-Id: I8b6ffc033bbef22eb699eac50d8f79b829fa5a38
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2613527
Commit-Queue: Austin Sullivan <asully@chromium.org>
Reviewed-by: Yoav Weiss <yoavweiss@chromium.org>
Reviewed-by: Marijn Kruisselbrink <mek@chromium.org>
Cr-Commit-Position: refs/heads/master@{#845739}

third_party/blink/renderer/modules/file_system_access/file_system_writable_file_stream.cc

@@ -89,20 +89,6 @@ ScriptPromise FileSystemWritableFileStream::truncate(
   return promise;
 }
 
-ScriptPromise FileSystemWritableFileStream::close(
-    ScriptState* script_state,
-    ExceptionState& exception_state) {
-  WritableStreamDefaultWriter* writer =
-      WritableStream::AcquireDefaultWriter(script_state, this, exception_state);
-  if (exception_state.HadException())
-    return ScriptPromise();
-
-  ScriptPromise promise = writer->close(script_state, exception_state);
-
-  WritableStreamDefaultWriter::Release(script_state, writer);
-  return promise;
-}
-
 ScriptPromise FileSystemWritableFileStream::seek(
     ScriptState* script_state,
     uint64_t offset,

third_party/blink/renderer/modules/file_system_access/file_system_writable_file_stream.h

@@ -35,7 +35,6 @@ class FileSystemWritableFileStream final : public WritableStream {
       const ArrayBufferOrArrayBufferViewOrBlobOrUSVStringOrWriteParams& data,
       ExceptionState&);
   ScriptPromise truncate(ScriptState*, uint64_t size, ExceptionState&);
-  ScriptPromise close(ScriptState*, ExceptionState&);
   ScriptPromise seek(ScriptState*, uint64_t offset, ExceptionState&);
 
  private:

third_party/blink/renderer/modules/file_system_access/file_system_writable_file_stream.idl

@@ -10,6 +10,5 @@
  ] interface FileSystemWritableFileStream : WritableStream {
    [CallWith=ScriptState, RaisesException] Promise<void> write((BufferSource or Blob or USVString or WriteParams) data);
    [CallWith=ScriptState, RaisesException] Promise<void> truncate(unsigned long long size);
-   [CallWith=ScriptState, RaisesException] Promise<void> close();
    [CallWith=ScriptState, RaisesException] Promise<void> seek(unsigned long long offset);
  };

third_party/blink/web_tests/http/tests/serviceworker/webexposed/global-interface-listing-service-worker-expected.txt

@@ -564,7 +564,6 @@ interface FileSystemHandle
     method requestPermission
 interface FileSystemWritableFileStream : WritableStream
     attribute @@toStringTag
-    method close
     method constructor
     method seek
     method truncate

third_party/blink/web_tests/virtual/stable/http/tests/serviceworker/webexposed/global-interface-listing-service-worker-expected.txt

@@ -531,7 +531,6 @@ interface FileSystemHandle
     method requestPermission
 interface FileSystemWritableFileStream : WritableStream
     attribute @@toStringTag
-    method close
     method constructor
     method seek
     method truncate

third_party/blink/web_tests/virtual/stable/webexposed/global-interface-listing-dedicated-worker-expected.txt

@@ -473,7 +473,6 @@ Starting worker: resources/global-interface-listing-worker.js
 [Worker]     method requestPermission
 [Worker] interface FileSystemWritableFileStream : WritableStream
 [Worker]     attribute @@toStringTag
-[Worker]     method close
 [Worker]     method constructor
 [Worker]     method seek
 [Worker]     method truncate

third_party/blink/web_tests/virtual/stable/webexposed/global-interface-listing-expected.txt

@@ -2063,7 +2063,6 @@ interface FileSystemHandle
     method requestPermission
 interface FileSystemWritableFileStream : WritableStream
     attribute @@toStringTag
-    method close
     method constructor
     method seek
     method truncate

third_party/blink/web_tests/virtual/stable/webexposed/global-interface-listing-shared-worker-expected.txt

@@ -468,7 +468,6 @@ Starting worker: resources/global-interface-listing-worker.js
 [Worker]     method requestPermission
 [Worker] interface FileSystemWritableFileStream : WritableStream
 [Worker]     attribute @@toStringTag
-[Worker]     method close
 [Worker]     method constructor
 [Worker]     method seek
 [Worker]     method truncate

third_party/blink/web_tests/webexposed/global-interface-listing-dedicated-worker-expected.txt

@@ -538,7 +538,6 @@ Starting worker: resources/global-interface-listing-worker.js
 [Worker]     method requestPermission
 [Worker] interface FileSystemWritableFileStream : WritableStream
 [Worker]     attribute @@toStringTag
-[Worker]     method close
 [Worker]     method constructor
 [Worker]     method seek
 [Worker]     method truncate

third_party/blink/web_tests/webexposed/global-interface-listing-expected.txt

@@ -2520,7 +2520,6 @@ interface FileSystemHandle
     method requestPermission
 interface FileSystemWritableFileStream : WritableStream
     attribute @@toStringTag
-    method close
     method constructor
     method seek
     method truncate

third_party/blink/web_tests/webexposed/global-interface-listing-shared-worker-expected.txt

@@ -493,7 +493,6 @@ Starting worker: resources/global-interface-listing-worker.js
 [Worker]     method requestPermission
 [Worker] interface FileSystemWritableFileStream : WritableStream
 [Worker]     attribute @@toStringTag
-[Worker]     method close
 [Worker]     method constructor
 [Worker]     method seek
 [Worker]     method truncate