Make ApplicationCache a DOMWindowClient

third_party/WebKit/Source/core/loader/appcache/ApplicationCache.h

Index: third_party/WebKit/Source/core/loader/appcache/ApplicationCache.h
diff --git a/third_party/WebKit/Source/core/loader/appcache/ApplicationCache.h b/third_party/WebKit/Source/core/loader/appcache/ApplicationCache.h
index 50cbcbcd3aae6d2fbd58b267df2e14dc4d9c7c75..b5f5d33445832ebf63f596cd9fbfa50ecc5d05fa 100644
--- a/third_party/WebKit/Source/core/loader/appcache/ApplicationCache.h
+++ b/third_party/WebKit/Source/core/loader/appcache/ApplicationCache.h
@@ -38,7 +38,7 @@ class ExceptionState;
 class LocalFrame;
 
 class ApplicationCache final : public EventTargetWithInlineData,
-                               public ContextLifecycleObserver {
+                               public DOMWindowClient {
   DEFINE_WRAPPERTYPEINFO();
   USING_GARBAGE_COLLECTED_MIXIN(ApplicationCache);
 
@@ -48,8 +48,6 @@ class ApplicationCache final : public EventTargetWithInlineData,
   }
   ~ApplicationCache() override {}
 
-  void contextDestroyed() override;
-
   unsigned short status() const;
   void update(ExceptionState&);
   void swapCache(ExceptionState&);