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

chrome/browser/ui/webui/ntp/suggestions_combiner_unittest.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.
 
 // TODO(beaudoin): What is really needed here?
 
 #include <deque>
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 116 matching lines @@
 };
 
 }  // namespace
 
 // Stub for a SuggestionsSource that can provide a number of fake suggestions.
 // Fake suggestions are DictionaryValue with a single "title" string field
 // containing the |source_name| followed by the index of the suggestion.
 // Not in the empty namespace since it's a friend of SuggestionsCombiner.
 class SuggestionsSourceStub : public SuggestionsSource {
  public:
-  explicit SuggestionsSourceStub(int weight,
-      const std::string& source_name, int number_of_suggestions)
+  SuggestionsSourceStub(int weight,
+                        const std::string& source_name,
+                        int number_of_suggestions)
       : combiner_(NULL),
         weight_(weight),
         source_name_(source_name),
         number_of_suggestions_(number_of_suggestions),
         debug_(false) {
   }
   virtual ~SuggestionsSourceStub() {
     STLDeleteElements(&items_);
   }
 
@@ skipping 147 matching lines @@
       } else {
         EXPECT_EQ(description.results[j], static_cast<const char*>(NULL)) <<
             " test index:" << i;
       }
     }
 
     Reset();
   }
 }