Make Inspector aware of RemoteFrames in FrameTree

Source/modules/indexeddb/InspectorIndexedDBAgent.cpp

Index: Source/modules/indexeddb/InspectorIndexedDBAgent.cpp
diff --git a/Source/modules/indexeddb/InspectorIndexedDBAgent.cpp b/Source/modules/indexeddb/InspectorIndexedDBAgent.cpp
index 71351b51e3e4f2cfb78a3795d0ebc9c32c2c89cc..5f7c4a975935beb0940d7d991b1c6fbdb9716f6f 100644
--- a/Source/modules/indexeddb/InspectorIndexedDBAgent.cpp
+++ b/Source/modules/indexeddb/InspectorIndexedDBAgent.cpp
@@ -539,10 +539,12 @@ public:
 
 LocalFrame* findFrameWithSecurityOrigin(Page* page, const String& securityOrigin)
 {
-    for (LocalFrame* frame = page->mainFrame(); frame; frame = frame->tree().traverseNext()) {
-        RefPtr<SecurityOrigin> documentOrigin = frame->document()->securityOrigin();
+    for (Frame* frame = page->mainFrame(); frame; frame = frame->tree().traverseNext()) {
+        if (!frame->isLocalFrame())
+            continue;
+        RefPtr<SecurityOrigin> documentOrigin = toLocalFrame(frame)->document()->securityOrigin();
         if (documentOrigin->toRawString() == securityOrigin)
-            return frame;
+            return toLocalFrame(frame);
     }
     return 0;
 }