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

chrome/browser/extensions/api/declarative_webrequest/webrequest_action.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_EXTENSIONS_API_DECLARATIVE_WEBREQUEST_WEBREQUEST_ACTION_H_
 #define CHROME_BROWSER_EXTENSIONS_API_DECLARATIVE_WEBREQUEST_WEBREQUEST_ACTION_H_
 
 #include <list>
 #include <string>
 #include <vector>
@@ skipping 252 matching lines @@
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WebRequestRedirectToEmptyDocumentAction);
 };
 
 // Action that instructs to redirect a network request.
 class WebRequestRedirectByRegExAction : public WebRequestAction {
  public:
   // The |to_pattern| has to be passed in RE2 syntax with the exception that
   // capture groups are referenced in Perl style ($1, $2, ...).
-  explicit WebRequestRedirectByRegExAction(scoped_ptr<re2::RE2> from_pattern,
-                                           const std::string& to_pattern);
+  WebRequestRedirectByRegExAction(scoped_ptr<re2::RE2> from_pattern,
+                                  const std::string& to_pattern);
   virtual ~WebRequestRedirectByRegExAction();
 
   // Conversion of capture group styles between Perl style ($1, $2, ...) and
   // RE2 (\1, \2, ...).
   static std::string PerlToRe2Style(const std::string& perl);
 
   // Implementation of WebRequestAction:
   virtual int GetStages() const OVERRIDE;
   virtual Type GetType() const OVERRIDE;
   virtual HostPermissionsStrategy GetHostPermissionsStrategy() const OVERRIDE;
@@ skipping 66 matching lines @@
 
  private:
   std::string name_;
   std::string value_;
   DISALLOW_COPY_AND_ASSIGN(WebRequestAddResponseHeaderAction);
 };
 
 // Action that instructs to remove a response header.
 class WebRequestRemoveResponseHeaderAction : public WebRequestAction {
  public:
-  explicit WebRequestRemoveResponseHeaderAction(const std::string& name,
-                                                const std::string& value,
-                                                bool has_value);
+  WebRequestRemoveResponseHeaderAction(const std::string& name,
+                                       const std::string& value,
+                                       bool has_value);
   virtual ~WebRequestRemoveResponseHeaderAction();
 
   // Implementation of WebRequestAction:
   virtual int GetStages() const OVERRIDE;
   virtual Type GetType() const OVERRIDE;
   virtual LinkedPtrEventResponseDelta CreateDelta(
       const WebRequestRule::RequestData& request_data,
       const std::string& extension_id,
       const base::Time& extension_install_time) const OVERRIDE;
 
@@ skipping 87 matching lines @@
       const base::Time& extension_install_time) const OVERRIDE;
 
  private:
   std::string message_;
   DISALLOW_COPY_AND_ASSIGN(WebRequestSendMessageToExtensionAction);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_DECLARATIVE_WEBREQUEST_WEBREQUEST_ACTION_H_