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 c8a97ecabcc898c090631719906856a902e4d8a3..4f92a0847c919c5ab96b5ad4a192576f5ff3d8e1 100644
--- a/third_party/WebKit/Source/web/tests/ActiveConnectionThrottlingTest.cpp
+++ b/third_party/WebKit/Source/web/tests/ActiveConnectionThrottlingTest.cpp
@@ -4,7 +4,6 @@
 
 #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();
   }
 };