base: Use stl utilities from the base namespace

base/ios/crb_protocol_observers.mm

 // 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.
 
 #import "base/ios/crb_protocol_observers.h"
 
 #include <objc/runtime.h>
 #include <stddef.h>
 #include <algorithm>
 #include <vector>
@@ skipping 86 matching lines @@
 }
 
 - (Protocol*)protocol {
   return _protocol.get();
 }
 
 - (void)addObserver:(id)observer {
   DCHECK(observer);
   DCHECK([observer conformsToProtocol:self.protocol]);
 
-  if (ContainsValue(_observers, observer))
+  if (base::ContainsValue(_observers, observer))
     return;
 
   _observers.push_back(observer);
 }
 
 - (void)removeObserver:(id)observer {
   DCHECK(observer);
   auto it = std::find(_observers.begin(), _observers.end(), observer);
   if (it != _observers.end()) {
     if (_invocationDepth)
@@ skipping 64 matching lines @@
 
 #pragma mark - Private
 
 - (void)compact {
   DCHECK(!_invocationDepth);
   _observers.erase(std::remove(_observers.begin(), _observers.end(), nil),
                    _observers.end());
 }
 
 @end