Move Declarative Web Request API out of experimental and make it a feature

chrome/browser/extensions/api/declarative/declarative_api.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_DECLARATIVE_API_H__
 #define CHROME_BROWSER_EXTENSIONS_API_DECLARATIVE_DECLARATIVE_API_H__
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
@@ skipping 13 matching lines @@
   // Returns false in case of errors.
   virtual bool RunImplOnCorrectThread() = 0;
 
  protected:
   scoped_refptr<RulesRegistry> rules_registry_;
 };
 
 class AddRulesFunction : public RulesFunction {
  public:
   virtual bool RunImplOnCorrectThread() OVERRIDE;
-  DECLARE_EXTENSION_FUNCTION_NAME("experimental.declarative.addRules");
+  DECLARE_EXTENSION_FUNCTION_NAME("declarative.addRules");
 };
 
 class RemoveRulesFunction : public RulesFunction {
  public:
   virtual bool RunImplOnCorrectThread() OVERRIDE;
-  DECLARE_EXTENSION_FUNCTION_NAME("experimental.declarative.removeRules");
+  DECLARE_EXTENSION_FUNCTION_NAME("declarative.removeRules");
 };
 
 class GetRulesFunction : public RulesFunction {
  public:
   virtual bool RunImplOnCorrectThread() OVERRIDE;
-  DECLARE_EXTENSION_FUNCTION_NAME("experimental.declarative.getRules");
+  DECLARE_EXTENSION_FUNCTION_NAME("declarative.getRules");
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_DECLARATIVE_DECLARATIVE_API_H__