Don't post tasks from RulesRegistry c-tor

chrome/browser/extensions/api/declarative/rules_registry.h

Index: chrome/browser/extensions/api/declarative/rules_registry.h
diff --git a/chrome/browser/extensions/api/declarative/rules_registry.h b/chrome/browser/extensions/api/declarative/rules_registry.h
index 4357d6b5b0599d87f26a19fbfaebfbcc34ab9c79..6f5e4ea4cceeae437a5c93d5efc64309b0c1591c 100644
--- a/chrome/browser/extensions/api/declarative/rules_registry.h
+++ b/chrome/browser/extensions/api/declarative/rules_registry.h
@@ -65,8 +65,10 @@ class RulesRegistry : public base::RefCountedThreadSafe<RulesRegistry> {
                 RulesCacheDelegate* cache_delegate,
                 const WebViewKey& webview_key);
 
-  const OneShotEvent& ready() const {
-    return ready_;
+  // If |ready()| returns NULL, the registry does not wait for the
+  // |cache_delegate_| to initialize and can be considered ready.
+  const OneShotEvent* ready() const {
+    return ready_.get();
   }
 
   // RulesRegistry implementation:
@@ -239,7 +241,7 @@ class RulesRegistry : public base::RefCountedThreadSafe<RulesRegistry> {
 
   // Signaled when we have finished reading from storage for all extensions that
   // are loaded on startup.
-  OneShotEvent ready_;
+  scoped_ptr<OneShotEvent> ready_;
 
   // The factory needs to be declared before |cache_delegate_|, so that it can
   // produce a pointer as a construction argument for |cache_delegate_|.