Implement throttling behavior for LocalStorage mojo messages.

mojo/public/cpp/bindings/interface_ptr.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MOJO_PUBLIC_CPP_BINDINGS_INTERFACE_PTR_H_
 #define MOJO_PUBLIC_CPP_BINDINGS_INTERFACE_PTR_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 182 matching lines @@
 
   bool Equals(const InterfacePtr& other) const {
     if (this == &other)
       return true;
 
     // Now that the two refer to different objects, they are equivalent if
     // and only if they are both null.
     return !(*this) && !other;
   }
 
+  size_t pending_callback_count() const {
+    return internal_state_.pending_callback_count();
+  }
+
+  void set_process_async_during_sync(bool value) {
+    internal_state_.set_process_async_during_sync(value);
+  }
+
   // DO NOT USE. Exposed only for internal use and for testing.
   internal::InterfacePtrState<Interface>* internal_state() {
     return &internal_state_;
   }
 
   // Allow InterfacePtr<> to be used in boolean expressions, but not
   // implicitly convertible to a real bool (which is dangerous).
  private:
   // TODO(dcheng): Use an explicit conversion operator.
   typedef internal::InterfacePtrState<Interface> InterfacePtr::*Testable;
@@ skipping 27 matching lines @@
         base::ThreadTaskRunnerHandle::Get()) {
   InterfacePtr<Interface> ptr;
   if (info.is_valid())
     ptr.Bind(std::move(info), std::move(runner));
   return std::move(ptr);
 }
 
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_BINDINGS_INTERFACE_PTR_H_