Oilpan: keep FormData on the heap by default.

Source/core/loader/BeaconLoader.cpp

Index: Source/core/loader/BeaconLoader.cpp
diff --git a/Source/core/loader/BeaconLoader.cpp b/Source/core/loader/BeaconLoader.cpp
index 35b056c4531ef9356c2ca410966587108784dc8e..b12dc62b51d6c09557628211e589bde3b24b56ff 100644
--- a/Source/core/loader/BeaconLoader.cpp
+++ b/Source/core/loader/BeaconLoader.cpp
@@ -37,12 +37,12 @@ protected:
     static unsigned long long beaconSize(const String&);
     static unsigned long long beaconSize(Blob*);
     static unsigned long long beaconSize(PassRefPtr<DOMArrayBufferView>);
-    static unsigned long long beaconSize(PassRefPtrWillBeRawPtr<DOMFormData>);
+    static unsigned long long beaconSize(DOMFormData*);
 
     static bool serialize(const String&, ResourceRequest&, int, int&);
     static bool serialize(Blob*, ResourceRequest&, int, int&);
     static bool serialize(PassRefPtr<DOMArrayBufferView>, ResourceRequest&, int, int&);
-    static bool serialize(PassRefPtrWillBeRawPtr<DOMFormData>, ResourceRequest&, int, int&);
+    static bool serialize(DOMFormData*, ResourceRequest&, int, int&);
 };
 
 template<typename Payload>
@@ -117,7 +117,7 @@ bool BeaconLoader::sendBeacon(LocalFrame* frame, int allowance, const KURL& beac
     return Sender::send(frame, allowance, beaconURL, beacon, payloadLength);
 }
 
-bool BeaconLoader::sendBeacon(LocalFrame* frame, int allowance, const KURL& beaconURL, PassRefPtrWillBeRawPtr<DOMFormData> data, int& payloadLength)
+bool BeaconLoader::sendBeacon(LocalFrame* frame, int allowance, const KURL& beaconURL, DOMFormData* data, int& payloadLength)
 {
     BeaconData<decltype(data)> beacon(data);
     return Sender::send(frame, allowance, beaconURL, beacon, payloadLength);
@@ -219,13 +219,13 @@ bool Beacon::serialize(PassRefPtr<DOMArrayBufferView> data, ResourceRequest& req
     return true;
 }
 
-unsigned long long Beacon::beaconSize(PassRefPtrWillBeRawPtr<DOMFormData> data)
+unsigned long long Beacon::beaconSize(DOMFormData* data)
 {
     // DOMFormData's size cannot be determined until serialized.
     return 0;
 }
 
-bool Beacon::serialize(PassRefPtrWillBeRawPtr<DOMFormData> data, ResourceRequest& request, int allowance, int& payloadLength)
+bool Beacon::serialize(DOMFormData* data, ResourceRequest& request, int allowance, int& payloadLength)
 {
     ASSERT(data);
     RefPtr<FormData> entityBody = data->createMultiPartFormData();