[blink] Unique pointers in Platform.h

third_party/WebKit/Source/modules/webaudio/BaseAudioContextTest.cpp

 // Copyright 2016 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 "modules/webaudio/BaseAudioContext.h"
 
 #include "bindings/core/v8/V8BindingForCore.h"
 #include "core/dom/Document.h"
 #include "core/dom/DocumentUserGestureToken.h"
 #include "core/frame/FrameOwner.h"
 #include "core/frame/FrameTypes.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/Settings.h"
 #include "core/loader/DocumentLoader.h"
 #include "core/loader/EmptyClients.h"
 #include "core/testing/DummyPageHolder.h"
 #include "modules/webaudio/AudioContextOptions.h"
 #include "platform/UserGestureIndicator.h"
 #include "platform/testing/HistogramTester.h"
 #include "platform/testing/TestingPlatformSupport.h"
+#include "platform/wtf/PtrUtil.h"
 #include "public/platform/WebAudioDevice.h"
 #include "public/platform/WebAudioLatencyHint.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blink {
 
 namespace {
 
 const char* const kCrossOriginMetric = "WebAudio.Autoplay.CrossOrigin";
 
@@ skipping 28 matching lines @@
   double SampleRate() override { return sample_rate_; }
   int FramesPerBuffer() override { return frames_per_buffer_; }
 
  private:
   double sample_rate_;
   int frames_per_buffer_;
 };
 
 class BaseAudioContextTestPlatform : public TestingPlatformSupport {
  public:
-  WebAudioDevice* CreateAudioDevice(unsigned number_of_input_channels,
-                                    unsigned number_of_channels,
-                                    const WebAudioLatencyHint& latency_hint,
-                                    WebAudioDevice::RenderCallback*,
-                                    const WebString& device_id,
-                                    const WebSecurityOrigin&) override {
-    return new MockWebAudioDevice(AudioHardwareSampleRate(),
-                                  AudioHardwareBufferSize());
+  std::unique_ptr<WebAudioDevice> CreateAudioDevice(
+      unsigned number_of_input_channels,
+      unsigned number_of_channels,
+      const WebAudioLatencyHint& latency_hint,
+      WebAudioDevice::RenderCallback*,
+      const WebString& device_id,
+      const WebSecurityOrigin&) override {
+    return WTF::MakeUnique<MockWebAudioDevice>(AudioHardwareSampleRate(),
+                                               AudioHardwareBufferSize());
   }
 
   double AudioHardwareSampleRate() override { return 44100; }
   size_t AudioHardwareBufferSize() override { return 128; }
 };
 
 }  // anonymous namespace
 
 class BaseAudioContextTest : public ::testing::Test {
  protected:
@@ skipping 197 matching lines @@
   audio_context->resumeContext(GetScriptStateFrom(ChildDocument()));
   RejectPendingResolvers(audio_context);
   RecordAutoplayStatus(audio_context);
 
   histogram_tester.ExpectBucketCount(
       kCrossOriginMetric, AutoplayStatus::kAutoplayStatusSucceeded, 1);
   histogram_tester.ExpectTotalCount(kCrossOriginMetric, 1);
 }
 
 }  // namespace blink