Wait to notify completion until after a Lo-Fi image is reloaded.

third_party/WebKit/Source/core/fetch/Resource.h

Index: third_party/WebKit/Source/core/fetch/Resource.h
diff --git a/third_party/WebKit/Source/core/fetch/Resource.h b/third_party/WebKit/Source/core/fetch/Resource.h
index a8066ef6e97e8cb0c18a6bd1a3447aa9b2043f2c..7319eeab11100a7ab0bf0ed811da14a6a94a50da 100644
--- a/third_party/WebKit/Source/core/fetch/Resource.h
+++ b/third_party/WebKit/Source/core/fetch/Resource.h
@@ -374,6 +374,16 @@ class CORE_EXPORT Resource : public GarbageCollectedFinalized<Resource>,
         : AutoReset(&resource->m_isAddRemoveClientProhibited, true) {}
   };
 
+  class ProhibitNotifyClientsOfCompletionInScope : public AutoReset<bool> {
+   public:
+    ProhibitNotifyClientsOfCompletionInScope(Resource* resource)
+        : AutoReset(&resource->m_isNotifyClientsOfCompletionProhibited, true) {}
+  };
+
+  bool isNotifyClientsOfCompletionProhibited() const {
+    return m_isNotifyClientsOfCompletionProhibited;
+  }
+
  private:
   class ResourceCallback;
   class CachedMetadataHandlerImpl;
@@ -429,6 +439,8 @@ class CORE_EXPORT Resource : public GarbageCollectedFinalized<Resource>,
 
   bool m_isAddRemoveClientProhibited;
 
+  bool m_isNotifyClientsOfCompletionProhibited;
+
   // Ordered list of all redirects followed while fetching this resource.
   Vector<RedirectPair> m_redirectChain;