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

chrome/renderer/extensions/dispatcher.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.
 
 #include "chrome/renderer/extensions/dispatcher.h"
 
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/string_piece.h"
@@ skipping 153 matching lines @@
       return false;
 
     ExtensionHelper* helper = ExtensionHelper::Get(render_view);
     return (extension && extension->has_lazy_background_page() &&
             helper->view_type() == chrome::VIEW_TYPE_EXTENSION_BACKGROUND_PAGE);
   }
 };
 
 class ProcessInfoNativeHandler : public ChromeV8Extension {
  public:
-  explicit ProcessInfoNativeHandler(
+  ProcessInfoNativeHandler(
       Dispatcher* dispatcher,
       const std::string& extension_id,
       const std::string& context_type,
       bool is_incognito_context,
       int manifest_version,
       bool send_request_disabled)
       : ChromeV8Extension(dispatcher),
         extension_id_(extension_id),
         context_type_(context_type),
         is_incognito_context_(is_incognito_context),
@@ skipping 945 matching lines @@
     std::string error_msg = base::StringPrintf(kMessage, function_name.c_str());
     v8::ThrowException(
         v8::Exception::Error(v8::String::New(error_msg.c_str())));
     return false;
   }
 
   return true;
 }
 
 }  // namespace extensions