Oilpan: Prepare moving InspectorResourceContentLoader to Oilpan

Source/core/inspector/InspectorPageAgent.cpp

Index: Source/core/inspector/InspectorPageAgent.cpp
diff --git a/Source/core/inspector/InspectorPageAgent.cpp b/Source/core/inspector/InspectorPageAgent.cpp
index 0eea2bd408cdca11701cf73b912fd9244bdc7a7f..c5870bc08a92a908e9e85549f4535be3157d1379 100644
--- a/Source/core/inspector/InspectorPageAgent.cpp
+++ b/Source/core/inspector/InspectorPageAgent.cpp
@@ -480,7 +480,15 @@ void InspectorPageAgent::enable(ErrorString*)
     m_enabled = true;
     m_state->setBoolean(PageAgentState::pageAgentEnabled, true);
     m_instrumentingAgents->setInspectorPageAgent(this);
-    m_inspectorResourceContentLoader = adoptPtr(new InspectorResourceContentLoader(m_page));
+    m_inspectorResourceContentLoader = adoptPtrWillBeNoop(new InspectorResourceContentLoader(m_page));
+}
+
+void InspectorPageAgent::dispose()
+{
+    if (!m_inspectorResourceContentLoader)
+        return;
+    m_inspectorResourceContentLoader->dispose();
+    m_inspectorResourceContentLoader.clear();
 }
 
 void InspectorPageAgent::disable(ErrorString*)
@@ -490,7 +498,10 @@ void InspectorPageAgent::disable(ErrorString*)
     m_state->remove(PageAgentState::pageAgentScriptsToEvaluateOnLoad);
     m_overlay->hide();
     m_instrumentingAgents->setInspectorPageAgent(0);
-    m_inspectorResourceContentLoader.clear();
+    if (m_inspectorResourceContentLoader) {
+        m_inspectorResourceContentLoader->dispose();
+        m_inspectorResourceContentLoader.clear();
+    }
     m_deviceMetricsOverridden = false;
 
     setShowPaintRects(0, false);
@@ -1449,6 +1460,7 @@ void InspectorPageAgent::trace(Visitor* visitor)
 {
     visitor->trace(m_page);
     visitor->trace(m_injectedScriptManager);
+    visitor->trace(m_inspectorResourceContentLoader);
     InspectorBaseAgent::trace(visitor);
 }