Move some extension manifest consistency checks to BackgroundManifestHandler.

chrome/common/extensions/background_info.h

 // Copyright (c) 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 CHROME_COMMON_EXTENSIONS_BACKGROUND_INFO_H_
 #define CHROME_COMMON_EXTENSIONS_BACKGROUND_INFO_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 14 matching lines @@
       const Extension* extension);
   static bool HasBackgroundPage(const Extension* extension);
   static bool HasPersistentBackgroundPage(const Extension* extension);
   static bool HasLazyBackgroundPage(const Extension* extension);
   static bool AllowJSAccess(const Extension* extension);
 
   bool has_background_page() const {
     return background_url_.is_valid() || !background_scripts_.empty();
   }
 
+  bool has_persistent_background_page() const {
+    return has_background_page() && is_persistent_;
+  }
+
+  bool has_lazy_background_page() const {
+    return has_background_page() && !is_persistent_;
+  }
+
   bool Parse(const Extension* extension, string16* error);
 
  private:
   bool LoadBackgroundScripts(const Extension* extension,
                              const std::string& key,
                              string16* error);
   bool LoadBackgroundPage(const Extension* extension,
                           const std::string& key,
                           string16* error);
   bool LoadBackgroundPage(const Extension* extension, string16* error);
@@ skipping 23 matching lines @@
 // Parses all background/event page-related keys in the manifest.
 class BackgroundManifestHandler : public ManifestHandler {
  public:
   BackgroundManifestHandler();
   virtual ~BackgroundManifestHandler();
 
   virtual bool Parse(Extension* extension, string16* error) OVERRIDE;
   virtual bool Validate(const Extension* extension,
                         std::string* error,
                         std::vector<InstallWarning>* warnings) const OVERRIDE;
+  virtual bool AlwaysParseForType(Manifest::Type type) const OVERRIDE;
 
  private:
   virtual const std::vector<std::string> Keys() const OVERRIDE;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_COMMON_EXTENSIONS_BACKGROUND_INFO_H_