Add helpers for creating UI components.

mojo/common/strong_binding_set.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_COMMON_STRONG_BINDING_SET_H_
 #define MOJO_COMMON_STRONG_BINDING_SET_H_
 
 #include <algorithm>
 #include <memory>
 #include <vector>
@@ skipping 26 matching lines @@
           std::find_if(bindings_.begin(), bindings_.end(),
                        [binding](const std::unique_ptr<Binding<Interface>>& b) {
                          return (b.get() == binding);
                        });
       DCHECK(it != bindings_.end());
       delete binding->impl();
       bindings_.erase(it);
     });
   }
 
+  // Removes all bindings for the specified interface implementation.
+  // The implementation object is not destroyed.
+  void RemoveBindings(Interface* impl) {
+    bindings_.erase(
+        std::remove_if(bindings_.begin(), bindings_.end(),
+                       [impl](const std::unique_ptr<Binding<Interface>>& b) {
+                         return (b->impl() == impl);
+                       }));
+  }
+
   // Closes all bindings and deletes their associated interfaces.
   void CloseAllBindings() {
     for (auto it = bindings_.begin(); it != bindings_.end(); ++it) {
       delete (*it)->impl();
     }
     bindings_.clear();
   }
 
   size_t size() const { return bindings_.size(); }
 
  private:
   std::vector<std::unique_ptr<Binding<Interface>>> bindings_;
 
   DISALLOW_COPY_AND_ASSIGN(StrongBindingSet);
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_COMMON_STRONG_BINDING_SET_H_