Add missing (and remove superfluous) 'explicit' from constructors.

rlz/lib/financial_ping.cc

 // Copyright (c) 2012 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.
 //
 // Library functions related to the Financial Server ping.
 
 #include "rlz/lib/financial_ping.h"
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 172 matching lines @@
 bool FinancialPing::SetURLRequestContext(
     net::URLRequestContextGetter* context) {
   g_context = context;
   return true;
 }
 
 namespace {
 
 class FinancialPingUrlFetcherDelegate : public net::URLFetcherDelegate {
  public:
-  FinancialPingUrlFetcherDelegate(const base::Closure& callback)
+  explicit FinancialPingUrlFetcherDelegate(const base::Closure& callback)
       : callback_(callback) {
   }
   virtual void OnURLFetchComplete(const net::URLFetcher* source);
 
  private:
   base::Closure callback_;
 };
 
 void FinancialPingUrlFetcherDelegate::OnURLFetchComplete(
     const net::URLFetcher* source) {
@@ skipping 145 matching lines @@
 
 bool FinancialPing::ClearLastPingTime(Product product) {
   ScopedRlzValueStoreLock lock;
   RlzValueStore* store = lock.GetStore();
   if (!store || !store->HasAccess(RlzValueStore::kWriteAccess))
     return false;
   return store->ClearPingTime(product);
 }
 
 }  // namespace