Don't garbage collect storage for disabled and crashed extensions.

chrome/browser/extensions/extension_garbage_collector.cc

 // Copyright 2014 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.
 
 #include "chrome/browser/extensions/extension_garbage_collector.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/files/file_enumerator.h"
 #include "base/logging.h"
@@ skipping 202 matching lines @@
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
 
   ExtensionPrefs* extension_prefs = ExtensionPrefs::Get(context_);
   DCHECK(extension_prefs);
   if (!extension_prefs->NeedsStorageGarbageCollection())
     return;
   extension_prefs->SetNeedsStorageGarbageCollection(false);
 
   scoped_ptr<base::hash_set<base::FilePath> > active_paths(
       new base::hash_set<base::FilePath>());
-  const ExtensionSet& extensions =
-      ExtensionRegistry::Get(context_)->enabled_extensions();
-  for (ExtensionSet::const_iterator iter = extensions.begin();
-       iter != extensions.end();
+  scoped_ptr<ExtensionSet> extensions =
+      ExtensionRegistry::Get(context_)->GenerateInstalledExtensionsSet();

[awong, 2014/04/21 17:54:19]

Can you update the comment in the .h file to match the new filter criteria?

+  for (ExtensionSet::const_iterator iter = extensions->begin();
+       iter != extensions->end();
        ++iter) {
     if (AppIsolationInfo::HasIsolatedStorage(iter->get())) {
       active_paths->insert(
           content::BrowserContext::GetStoragePartitionForSite(
               context_, util::GetSiteForExtensionId((*iter)->id(), context_))
               ->GetPath());
     }
   }
 
   // The data of ephemeral apps can outlive their cache lifetime. Ensure
@@ skipping 34 matching lines @@
     // accounting.
     NOTREACHED();
 
     // Don't let the count go negative to avoid garbage collecting when
     // an install is actually in progress.
     crx_installs_in_progress_ = 0;
   }
 }
 
 }  // namespace extensions