Revert of [blink] Unique pointers in Platform.h

third_party/WebKit/Source/web/tests/ActiveConnectionThrottlingTest.cpp

Index: third_party/WebKit/Source/web/tests/ActiveConnectionThrottlingTest.cpp
diff --git a/third_party/WebKit/Source/web/tests/ActiveConnectionThrottlingTest.cpp b/third_party/WebKit/Source/web/tests/ActiveConnectionThrottlingTest.cpp
index 7997723f2ad8b4721807100d81bfdf9716ef228a..5173e794ba2f2f0020b67d560a938b0c55c6e4d9 100644
--- a/third_party/WebKit/Source/web/tests/ActiveConnectionThrottlingTest.cpp
+++ b/third_party/WebKit/Source/web/tests/ActiveConnectionThrottlingTest.cpp
@@ -5,7 +5,6 @@
 #include "core/exported/WebViewBase.h"
 #include "platform/scheduler/renderer/web_view_scheduler.h"
 #include "platform/testing/TestingPlatformSupport.h"
-#include "platform/wtf/PtrUtil.h"
 #include "public/platform/WebRTCError.h"
 #include "public/platform/WebRTCPeerConnectionHandler.h"
 #include "public/platform/WebRTCRtpReceiver.h"
@@ -98,10 +97,9 @@
 
 class TestingPlatformSupportWithWebRTC : public TestingPlatformSupport {
  public:
-  std::unique_ptr<blink::WebRTCPeerConnectionHandler>
-  CreateRTCPeerConnectionHandler(
+  blink::WebRTCPeerConnectionHandler* CreateRTCPeerConnectionHandler(
       blink::WebRTCPeerConnectionHandlerClient*) override {
-    return WTF::MakeUnique<MockWebRTCPeerConnectionHandler>();
+    return new MockWebRTCPeerConnectionHandler();
   }
 };