Make Inspector aware of RemoteFrames in FrameTree

Source/core/inspector/InspectorResourceAgent.cpp

Index: Source/core/inspector/InspectorResourceAgent.cpp
diff --git a/Source/core/inspector/InspectorResourceAgent.cpp b/Source/core/inspector/InspectorResourceAgent.cpp
index d53640c8abffa34e8c78f0130c6e29ee9251fa6a..cdb587b564645a1435f50e543586615562e059d3 100644
--- a/Source/core/inspector/InspectorResourceAgent.cpp
+++ b/Source/core/inspector/InspectorResourceAgent.cpp
@@ -718,8 +718,10 @@ void InspectorResourceAgent::setCacheDisabled(ErrorString*, bool cacheDisabled)
     m_state->setBoolean(ResourceAgentState::cacheDisabled, cacheDisabled);
     if (cacheDisabled)
         memoryCache()->evictResources();
-    for (LocalFrame* frame = m_pageAgent->mainFrame(); frame; frame = frame->tree().traverseNext())
-        frame->document()->fetcher()->garbageCollectDocumentResources();
+    for (Frame* frame = m_pageAgent->mainFrame(); frame; frame = frame->tree().traverseNext()) {
+        if (frame->isLocalFrame())
+            toLocalFrame(frame)->document()->fetcher()->garbageCollectDocumentResources();
+    }
 }
 
 void InspectorResourceAgent::loadResourceForFrontend(ErrorString* errorString, const String& frameId, const String& url, const RefPtr<JSONObject>* requestHeaders, PassRefPtr<LoadResourceForFrontendCallback> prpCallback)