[blink] Unique pointers in Platform.h

third_party/WebKit/Source/modules/webaudio/AudioContextTest.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 "modules/webaudio/AudioContext.h"
 
 #include "core/dom/Document.h"
 #include "core/testing/DummyPageHolder.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 {
 
 class MockWebAudioDevice : public WebAudioDevice {
  public:
   explicit MockWebAudioDevice(double sample_rate, int frames_per_buffer)
       : sample_rate_(sample_rate), frames_per_buffer_(frames_per_buffer) {}
   ~MockWebAudioDevice() override = default;
 
   void Start() override {}
   void Stop() override {}
   double SampleRate() override { return sample_rate_; }
   int FramesPerBuffer() override { return frames_per_buffer_; }
 
  private:
   double sample_rate_;
   int frames_per_buffer_;
 };
 
 class AudioContextTestPlatform : 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 {
+  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 {
     double buffer_size = 0;
     const double interactive_size = AudioHardwareBufferSize();
     const double balanced_size = AudioHardwareBufferSize() * 2;
     const double playback_size = AudioHardwareBufferSize() * 4;
     switch (latency_hint.Category()) {
       case WebAudioLatencyHint::kCategoryInteractive:
         buffer_size = interactive_size;
         break;
       case WebAudioLatencyHint::kCategoryBalanced:
         buffer_size = balanced_size;
         break;
       case WebAudioLatencyHint::kCategoryPlayback:
         buffer_size = playback_size;
         break;
       case WebAudioLatencyHint::kCategoryExact:
         buffer_size =
             clampTo(latency_hint.Seconds() * AudioHardwareSampleRate(),
                     static_cast<double>(AudioHardwareBufferSize()),
                     static_cast<double>(playback_size));
         break;
       default:
         NOTREACHED();
         break;
     }
 
-    return new MockWebAudioDevice(AudioHardwareSampleRate(), buffer_size);
+    return WTF::MakeUnique<MockWebAudioDevice>(AudioHardwareSampleRate(),
+                                               buffer_size);
   }
 
   double AudioHardwareSampleRate() override { return 44100; }
   size_t AudioHardwareBufferSize() override { return 128; }
 };
 
 }  // anonymous namespace
 
 class AudioContextTest : public ::testing::Test {
  protected:
@@ skipping 55 matching lines @@
   exact_too_big_options.setLatencyHint(
       AudioContextLatencyCategoryOrDouble::fromDouble(
           playback_context->baseLatency() * 2));
   AudioContext* exact_too_big_context = AudioContext::Create(
       GetDocument(), exact_too_big_options, ASSERT_NO_EXCEPTION);
   EXPECT_EQ(exact_too_big_context->baseLatency(),
             playback_context->baseLatency());
 }
 
 }  // namespace blink