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

chrome/browser/net/http_pipelining_compatibility_client.h

 // 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.
 
 #ifndef CHROME_BROWSER_NET_HTTP_PIPELINING_COMPATIBILITY_CLIENT_H_
 #define CHROME_BROWSER_NET_HTTP_PIPELINING_COMPATIBILITY_CLIENT_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 90 matching lines @@
  public:
   enum Options {
     PIPE_TEST_DEFAULTS,              // Only run the |requests| passed to Start.
     PIPE_TEST_RUN_CANARY_REQUEST,    // Also perform a canary request before
                                      // testing pipelining.
     PIPE_TEST_COLLECT_SERVER_STATS,  // Also request stats from the server after
                                      // the pipeline test completes.
     PIPE_TEST_CANARY_AND_STATS,      // Both of the above.
   };
 
-  HttpPipeliningCompatibilityClient(
+  explicit HttpPipeliningCompatibilityClient(
       internal::PipelineTestRequest::Factory* factory);
   virtual ~HttpPipeliningCompatibilityClient();
 
   // Launches the asynchronous URLRequests to fetch the URLs specified by
   // |requests| combined with |base_url|. |base_url| should match the pattern
   // "http://host/". |callback| is invoked once all the requests have completed.
   // URLRequests are initiated in |url_request_context|. Results are recorded to
   // UMA as they are received. If |collect_server_stats| is true, also collects
   // pipelining information recorded by the server.
   void Start(const std::string& base_url,
@@ skipping 27 matching lines @@
   size_t num_finished_;
   size_t num_succeeded_;
 };
 
 void CollectPipeliningCapabilityStatsOnUIThread(
     const std::string& pipeline_test_server, IOThread* io_thread);
 
 }  // namespace chrome_browser_net
 
 #endif  // CHROME_BROWSER_NET_HTTP_PIPELINING_COMPATIBILITY_CLIENT_H_