[Oilpan] Fix wrong usage off heap collections in WebDevToolsAgentImpl

third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp

Index: third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp b/third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp
index c2b98fd3f94a194d581df9c02a9013a7f6776a80..16786675d14a1efe1e7680b660372a32953f28c2 100644
--- a/third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp
+++ b/third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp
@@ -83,9 +83,9 @@ WebFrameWidgetImpl* WebFrameWidgetImpl::create(WebWidgetClient* client, WebLocal
 }
 
 // static
-HashSet<WebFrameWidgetImpl*>& WebFrameWidgetImpl::allInstances()
+WillBePersistentHeapHashSet<RawPtrWillBeWeakMember<WebFrameWidgetImpl>>& WebFrameWidgetImpl::allInstances()
 {
-    DEFINE_STATIC_LOCAL(HashSet<WebFrameWidgetImpl*>, allInstances, ());
+    DEFINE_STATIC_LOCAL(WillBePersistentHeapHashSet<RawPtrWillBeWeakMember<WebFrameWidgetImpl>>, allInstances, ());
     return allInstances;
 }