Suppress cancellation notification in XMLHttpRequest::endLoading

third_party/WebKit/Source/core/xmlhttprequest/XMLHttpRequest.cpp

Index: third_party/WebKit/Source/core/xmlhttprequest/XMLHttpRequest.cpp
diff --git a/third_party/WebKit/Source/core/xmlhttprequest/XMLHttpRequest.cpp b/third_party/WebKit/Source/core/xmlhttprequest/XMLHttpRequest.cpp
index 41c0edcdf32afe2abb78461b697dbab069a8d114..4e1085e5ea2f5555338f704e0ce50a5733ee2c32 100644
--- a/third_party/WebKit/Source/core/xmlhttprequest/XMLHttpRequest.cpp
+++ b/third_party/WebKit/Source/core/xmlhttprequest/XMLHttpRequest.cpp
@@ -1472,7 +1472,12 @@ void XMLHttpRequest::endLoading()
     InspectorInstrumentation::didFinishXHRLoading(getExecutionContext(), this, this, m_method, m_url);
 
     if (m_loader) {
+        const bool hasError = m_error;
+        // Set |m_error| in order to suppress the cancel notification (see
+        // XMLHttpRequest::didFail).
+        m_error = true;
         m_loader->cancel();
+        m_error = hasError;
         m_loader = nullptr;
     }