Reduce the number of iterations in write.js

third_party/WebKit/LayoutTests/http/tests/streams/writable-streams/write.js

 'use strict';
 
 if (self.importScripts) {
   self.importScripts('/resources/testharness.js');
   self.importScripts('../resources/test-utils.js');
   self.importScripts('../resources/recording-streams.js');
 }
 
 function writeArrayToStream(array, writableStreamWriter) {
   array.forEach(chunk => writableStreamWriter.write(chunk));
@@ skipping 147 matching lines @@
     }
   });
 
   const writer = ws.getWriter();
 
   return promise_rejects(t, thrownError, writer.write('a'), 'write() should reject with thrownError')
       .then(() => promise_rejects(t, new TypeError(), writer.close(), 'close() should be rejected'));
 }, 'when sink\'s write throws an error, the stream should become errored and the promise should reject');
 
 promise_test(() => {
-  const numberOfWrites = 10000;
+  const numberOfWrites = 1000;
 
   let resolveFirstWritePromise;
   let writeCount = 0;
   const ws = new WritableStream({
     write() {
       ++writeCount;
       if (!resolveFirstWritePromise) {
         return new Promise(resolve => {
           resolveFirstWritePromise = resolve;
         });
@@ skipping 40 matching lines @@
           thenCalled = true;
           onFulfilled();
         }
       };
     }
   });
   return ws.getWriter().write('a').then(() => assert_true(thenCalled, 'thenCalled should be true'));
 }, 'returning a thenable from write() should work');
 
 done();