Rewrite references to "wtf/" to "platform/wtf/" in platform/audio.

third_party/WebKit/Source/platform/audio/PushPullFIFOTest.cpp

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/audio/PushPullFIFO.h"
 
 #include <memory>
 #include <vector>
 #include "platform/audio/AudioUtilities.h"
 #include "platform/testing/TestingPlatformSupport.h"
+#include "platform/wtf/PtrUtil.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include "wtf/PtrUtil.h"
 
 namespace blink {
 
 namespace {
 
 // Check the basic contract of FIFO.
 TEST(PushPullFIFOBasicTest, BasicTests) {
   // This suppresses the multi-thread warning for GTest. Potently it increases
   // the test execution time, but this specific test is very short and simple.
   ::testing::FLAGS_gtest_death_test_style = "threadsafe";
@@ skipping 331 matching lines @@
      // - Output bus samples (index, expectedValue) = (0, 0), (143, 0)
      {0, 0, 0, 4, {{0, 0}, {1023, 0}}, {{0, 0}, {143, 0}}}}};
 
 INSTANTIATE_TEST_CASE_P(PushPullFIFOFeatureTest,
                         PushPullFIFOFeatureTest,
                         ::testing::ValuesIn(featureTestParams));
 
 }  // namespace
 
 }  // namespace blink