Add new method xhrSucceeded() to WebAutofillClient.

Source/core/xmlhttprequest/XMLHttpRequest.cpp

Index: Source/core/xmlhttprequest/XMLHttpRequest.cpp
diff --git a/Source/core/xmlhttprequest/XMLHttpRequest.cpp b/Source/core/xmlhttprequest/XMLHttpRequest.cpp
index d6f6a8febc07499a256572964ff432e70266b222..8ed17098c82176ac516fea0e598c69c504ea5d05 100644
--- a/Source/core/xmlhttprequest/XMLHttpRequest.cpp
+++ b/Source/core/xmlhttprequest/XMLHttpRequest.cpp
@@ -51,6 +51,9 @@
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/inspector/InspectorTraceEvents.h"
 #include "core/loader/ThreadableLoader.h"
+#include "core/page/Chrome.h"
+#include "core/page/ChromeClient.h"
+#include "core/page/Page.h"
 #include "core/streams/ReadableStream.h"
 #include "core/streams/ReadableStreamImpl.h"
 #include "core/streams/Stream.h"
@@ -665,6 +668,8 @@ void XMLHttpRequest::dispatchReadyStateChangeEvent()
         dispatchProgressEventFromSnapshot(EventTypeNames::loadend);
         TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "UpdateCounters", "data", InspectorUpdateCountersEvent::data());
     }
+    if (!document() || !document()->frame() || !document()->frame()->page())
+        return;

[tyoshino (SeeGerritForStatus), 2015/03/16 08:59:28]

move also this to L1581?

[Mike West, 2015/03/16 09:02:43]

This doesn't make much sense. You're returning out of the function anyway, and
none of these accessors have side-effects...

[Garrett Casto, 2015/03/16 17:31:55]

Done.

[Garrett Casto, 2015/03/16 17:31:55]

Should have been moved to 1581.

 }
 
 void XMLHttpRequest::setWithCredentials(bool value, ExceptionState& exceptionState)
@@ -1573,6 +1578,9 @@ void XMLHttpRequest::endLoading()
     m_loaderIdentifier = 0;
 
     changeState(DONE);
+
+    if (status() >= 200 && status() < 300)
+        document()->frame()->page()->chrome().client().xhrSucceeded(document()->frame());

[Mike West, 2015/03/16 09:02:43]

Did you mean to move them here?

 }
 
 void XMLHttpRequest::didSendData(unsigned long long bytesSent, unsigned long long totalBytesToBeSent)