Remove OwnPtr from Blink.

third_party/WebKit/Source/modules/fetch/Response.cpp

Index: third_party/WebKit/Source/modules/fetch/Response.cpp
diff --git a/third_party/WebKit/Source/modules/fetch/Response.cpp b/third_party/WebKit/Source/modules/fetch/Response.cpp
index 6d74e14dcc3f5ec1a3e38adccb29d672b83744a5..d801f76982f2ec8e30af58812dbb4f7d75159057 100644
--- a/third_party/WebKit/Source/modules/fetch/Response.cpp
+++ b/third_party/WebKit/Source/modules/fetch/Response.cpp
@@ -29,6 +29,7 @@
 #include "platform/network/HTTPHeaderMap.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerResponse.h"
 #include "wtf/RefPtr.h"
+#include <memory>
 
 namespace blink {
 
@@ -146,7 +147,7 @@ Response* Response::create(ScriptState* scriptState, ScriptValue bodyValue, cons
         if (RuntimeEnabledFeatures::responseBodyWithV8ExtraStreamEnabled()) {
             bodyBuffer = new BodyStreamBuffer(scriptState, bodyValue);
         } else {
-            OwnPtr<FetchDataConsumerHandle> bodyHandle;
+            std::unique_ptr<FetchDataConsumerHandle> bodyHandle;
             reader = ReadableStreamOperations::getReader(scriptState, bodyValue, exceptionState);
             if (exceptionState.hadException()) {
                 reader = ScriptValue();