Unified error handling for WritableStream

third_party/WebKit/LayoutTests/external/wpt/streams/writable-streams/write.dedicatedworker-expected.txt

Index: third_party/WebKit/LayoutTests/external/wpt/streams/writable-streams/write.dedicatedworker-expected.txt
diff --git a/third_party/WebKit/LayoutTests/external/wpt/streams/writable-streams/write.dedicatedworker-expected.txt b/third_party/WebKit/LayoutTests/external/wpt/streams/writable-streams/write.dedicatedworker-expected.txt
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+This is a testharness.js-based test.
+PASS WritableStream should complete asynchronous writes before close resolves 
+FAIL WritableStream should complete synchronous writes before close resolves assert_array_equals: close must always be called with the controller lengths differ, expected 1 got 0
+PASS fulfillment value of ws.write() call should be undefined even if the underlying sink returns a non-undefined value 
+PASS WritableStream should transition to waiting until write is acknowledged 
+PASS when write returns a rejected promise, queued writes and close should be cleared 
+PASS when sink's write throws an error, the stream should become errored and the promise should reject 
+PASS writer.write(), ready and closed reject with the error passed to controller.error() made before sink.write rejection 
+PASS a large queue of writes should be processed completely 
+PASS WritableStreamDefaultWriter should work when manually constructed 
+PASS returning a thenable from write() should work 
+Harness: the test ran to completion.
+