Exclude in-use origins from storage evictions for all QuotaEvictionPolicies.

storage/browser/quota/quota_manager.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 STORAGE_BROWSER_QUOTA_QUOTA_MANAGER_H_
 #define STORAGE_BROWSER_QUOTA_QUOTA_MANAGER_H_
 
 #include <deque>
 #include <list>
 #include <map>
@@ skipping 64 matching lines @@
 // An interface for deciding which origin's storage should be evicted when the
 // quota is exceeded.
 class STORAGE_EXPORT QuotaEvictionPolicy {
  public:
   virtual ~QuotaEvictionPolicy() {}
 
   // Returns the next origin to evict.  It might return an empty GURL when there
   // are no evictable origins.
   virtual void GetEvictionOrigin(
       const scoped_refptr<SpecialStoragePolicy>& special_storage_policy,
+      const std::set<GURL>& exceptions,
       const std::map<GURL, int64>& usage_map,
       int64 global_quota,
       const GetOriginCallback& callback) = 0;
 };
 
 // An interface called by QuotaTemporaryStorageEvictor.
 class STORAGE_EXPORT QuotaEvictionHandler {
  public:
   typedef StatusCallback EvictOriginDataCallback;
   typedef base::Callback<void(QuotaStatusCode status,
@@ skipping 281 matching lines @@
   void DeleteOriginFromDatabase(const GURL& origin, StorageType type);
 
   void DidOriginDataEvicted(QuotaStatusCode status);
 
   void ReportHistogram();
   void DidGetTemporaryGlobalUsageForHistogram(int64 usage,
                                               int64 unlimited_usage);
   void DidGetPersistentGlobalUsageForHistogram(int64 usage,
                                                int64 unlimited_usage);
 
+  std::set<GURL> GetEvictionOriginExceptions();
   void DidGetEvictionOrigin(const GetOriginCallback& callback,
                             const GURL& origin);
 
   // QuotaEvictionHandler.
   void GetEvictionOrigin(StorageType type,
                          int64 global_quota,
                          const GetOriginCallback& callback) override;
   void EvictOriginData(const GURL& origin,
                        StorageType type,
                        const EvictOriginDataCallback& callback) override;
@@ skipping 88 matching lines @@
 
 struct QuotaManagerDeleter {
   static void Destruct(const QuotaManager* manager) {
     manager->DeleteOnCorrectThread();
   }
 };
 
 }  // namespace storage
 
 #endif  // STORAGE_BROWSER_QUOTA_QUOTA_MANAGER_H_