Remove RuntimeAPIDelegate::GetPreviousVersion.

extensions/browser/extension_registry.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_BROWSER_EXTENSION_REGISTRY_H_
 #define EXTENSIONS_BROWSER_EXTENSION_REGISTRY_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/observer_list.h"
+#include "base/version.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "extensions/browser/uninstall_reason.h"
 #include "extensions/common/extension_set.h"
 #include "extensions/features/features.h"
 
 #if !BUILDFLAG(ENABLE_EXTENSIONS)
 #error "Extensions must be enabled"
 #endif
 
 namespace content {
@@ skipping 51 matching lines @@
 
   // Returns a set of all extensions in the subsets specified by |include_mask|.
   //  * enabled_extensions()     --> ExtensionRegistry::ENABLED
   //  * disabled_extensions()    --> ExtensionRegistry::DISABLED
   //  * terminated_extensions()  --> ExtensionRegistry::TERMINATED
   //  * blacklisted_extensions() --> ExtensionRegistry::BLACKLISTED
   //  * blocked_extensions()     --> ExtensionRegistry::BLOCKED
   std::unique_ptr<ExtensionSet> GenerateInstalledExtensionsSet(
       int include_mask) const;
 
+  // Returns the current version of the extension with the given |id|, if
+  // one exists.
+  // Note: If we are currently updating the extension, this returns the
+  // version stored currently, rather than the in-progress update.
+  //
+  // TODO(lazyboy): Consider updating callers to directly retrieve version()
+  // from either GetExtensionById() or querying ExtensionSet getters of this
+  // class.
+  base::Version GetStoredVersion(const ExtensionId& id) const;
+
   // The usual observer interface.
   void AddObserver(ExtensionRegistryObserver* observer);
   void RemoveObserver(ExtensionRegistryObserver* observer);
 
   // Invokes the observer method OnExtensionLoaded(). The extension must be
   // enabled at the time of the call.
   void TriggerOnLoaded(const Extension* extension);
 
   // Invokes the observer method OnExtensionReady(). This always follows
   // an OnLoaded event, but is not called until it's safe to create the
@@ skipping 101 matching lines @@
   base::ObserverList<ExtensionRegistryObserver> observers_;
 
   content::BrowserContext* const browser_context_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionRegistry);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_EXTENSION_REGISTRY_H_