Revert "Fix shared library build after r17368." and "Add performance.now() to the d8 shell.".

test/mjsunit/d8-performance-now.js

-// Copyright 2013 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// Flags: --allow-natives-syntax
-
-// Test the performance.now() function of d8.  This test only makes sense with
-// d8.
-
-// Don't run this test in gc stress mode. Time differences may be long
-// due to garbage collections.
-%SetFlags("--gc-interval=-1");
-%SetFlags("--nostress-compaction");
-
-(function run() {
-  var start_test = performance.now();
-  // Let the retry run for maximum 100ms to reduce flakiness.
-  for (var start = performance.now();
-       start - start_test < 100;
-       start = performance.now()) {
-    var end = performance.now();
-    assertTrue(start >= start_test);
-    assertTrue(end >= start);
-    while (end - start == 0) {
-      var next = performance.now();
-      assertTrue(next >= end);
-      end = next;
-    }
-    if (end - start <= 1) {
-      // Found (sub-)millisecond granularity.
-      return;
-    } else {
-      print("Timer difference too big: " + (end - start) + "ms");
-    }
-  }
-  assertTrue(false);
-})()