Reduce SuspendableObjects

third_party/WebKit/Source/modules/filesystem/DOMFileSystem.h

Index: third_party/WebKit/Source/modules/filesystem/DOMFileSystem.h
diff --git a/third_party/WebKit/Source/modules/filesystem/DOMFileSystem.h b/third_party/WebKit/Source/modules/filesystem/DOMFileSystem.h
index e643af1652f48aab5e280946e7b55578b810afa0..dfa990e3bf911188dfb8fcfb8317d72326501226 100644
--- a/third_party/WebKit/Source/modules/filesystem/DOMFileSystem.h
+++ b/third_party/WebKit/Source/modules/filesystem/DOMFileSystem.h
@@ -33,9 +33,9 @@
 
 #include "bindings/core/v8/ActiveScriptWrappable.h"
 #include "bindings/core/v8/ScriptWrappable.h"
+#include "core/dom/ContextLifecycleObserver.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/dom/ExecutionContextTask.h"
-#include "core/dom/SuspendableObject.h"
 #include "core/dom/TaskRunnerHelper.h"
 #include "modules/ModulesExport.h"
 #include "modules/filesystem/DOMFileSystemBase.h"
@@ -55,7 +55,7 @@ class MODULES_EXPORT DOMFileSystem final
     : public DOMFileSystemBase,
       public ScriptWrappable,
       public ActiveScriptWrappable<DOMFileSystem>,
-      public SuspendableObject {
+      public ContextLifecycleObserver {
   DEFINE_WRAPPERTYPEINFO();
   USING_GARBAGE_COLLECTED_MIXIN(DOMFileSystem);