Cleanly detach XHR and other pending loader clients from Inspector.

third_party/WebKit/Source/modules/eventsource/EventSource.cpp

Index: third_party/WebKit/Source/modules/eventsource/EventSource.cpp
diff --git a/third_party/WebKit/Source/modules/eventsource/EventSource.cpp b/third_party/WebKit/Source/modules/eventsource/EventSource.cpp
index 55659cda1f1db9b7da2d066761ce1bc2c3454f19..646b47063596a54006294e8a2b2c683be53aff6a 100644
--- a/third_party/WebKit/Source/modules/eventsource/EventSource.cpp
+++ b/third_party/WebKit/Source/modules/eventsource/EventSource.cpp
@@ -122,6 +122,10 @@ EventSource::~EventSource() {
   DCHECK(!m_loader);
 }
 
+void EventSource::dispose() {
+  InspectorInstrumentation::detachClientRequest(getExecutionContext(), this);
+}
+
 void EventSource::scheduleInitialConnect() {
   DCHECK_EQ(kConnecting, m_state);
   DCHECK(!m_loader);
@@ -370,6 +374,7 @@ void EventSource::abortConnectionAttempt() {
 }
 
 void EventSource::contextDestroyed(ExecutionContext*) {
+  InspectorInstrumentation::detachClientRequest(getExecutionContext(), this);
   close();
 }