Nuke WebPassOwnPtr<T> and replace it with std::unique_ptr<T>.

third_party/WebKit/Source/modules/permissions/PermissionsCallback.h

Index: third_party/WebKit/Source/modules/permissions/PermissionsCallback.h
diff --git a/third_party/WebKit/Source/modules/permissions/PermissionsCallback.h b/third_party/WebKit/Source/modules/permissions/PermissionsCallback.h
index 3800a78e4ed2ca609fd1bb2fd57694b8764488f4..a2351c991d2a57338becadd1911e1c033aad3d17 100644
--- a/third_party/WebKit/Source/modules/permissions/PermissionsCallback.h
+++ b/third_party/WebKit/Source/modules/permissions/PermissionsCallback.h
@@ -7,7 +7,6 @@
 
 #include "platform/heap/Handle.h"
 #include "public/platform/WebCallbacks.h"
-#include "public/platform/WebPassOwnPtr.h"
 #include "public/platform/WebVector.h"
 #include "public/platform/modules/permissions/WebPermissionStatus.h"
 #include "public/platform/modules/permissions/WebPermissionType.h"
@@ -15,6 +14,8 @@
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
 
+#include <memory>
+
 namespace blink {
 
 class ScriptPromiseResolver;
@@ -24,12 +25,12 @@ class ScriptPromiseResolver;
 // the callback. It takes a WebPermissionType in its constructor and will pass
 // it to the PermissionStatus.
 class PermissionsCallback final
-    : public WebCallbacks<WebPassOwnPtr<WebVector<WebPermissionStatus>>, void> {
+    : public WebCallbacks<std::unique_ptr<WebVector<WebPermissionStatus>>, void> {
 public:
     PermissionsCallback(ScriptPromiseResolver*, PassOwnPtr<Vector<WebPermissionType>>, PassOwnPtr<Vector<int>>);
     ~PermissionsCallback() = default;
 
-    void onSuccess(WebPassOwnPtr<WebVector<WebPermissionStatus>>) override;
+    void onSuccess(std::unique_ptr<WebVector<WebPermissionStatus>>) override;
     void onError() override;
 
 private: