Move ExtensionWarningService and ExtensionsWarningSet to extensions.

extensions/common/extensions_client.h

 // Copyright 2013 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 EXTENSIONS_COMMON_EXTENSIONS_CLIENT_H_
 #define EXTENSIONS_COMMON_EXTENSIONS_CLIENT_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 27 matching lines @@
   // Initializes global state. Not done in the constructor because unit tests
   // can create additional ExtensionsClients because the utility thread runs
   // in-process.
   virtual void Initialize() = 0;
 
   // Returns the global PermissionMessageProvider to use to provide permission
   // warning strings.
   virtual const PermissionMessageProvider& GetPermissionMessageProvider()
       const = 0;
 
+  // Returns the application name.

[James Cook, 2014/08/25 20:58:12]

I would provide examples, 'for example, "Chrome" or "Chromium".'

[Xi Han, 2014/08/26 18:21:40]

Done.

+  virtual const std::string GetProductName() = 0;
+
   // Create a FeatureProvider for a specific feature type, e.g. "permission".
   virtual scoped_ptr<FeatureProvider> CreateFeatureProvider(
       const std::string& name) const = 0;
 
   // Create a JSONFeatureProviderSource for a specific feature type,
   // e.g. "permission". Currently, all features are loaded from
   // JSONFeatureProviderSources.
   // This is used primarily in CreateFeatureProvider, above.
   virtual scoped_ptr<JSONFeatureProviderSource> CreateFeatureProviderSource(
       const std::string& name) const = 0;
@@ skipping 39 matching lines @@
   // Return the extensions client.
   static ExtensionsClient* Get();
 
   // Initialize the extensions system with this extensions client.
   static void Set(ExtensionsClient* client);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_EXTENSIONS_CLIENT_H_