Avoid large inlined automatic methods in IndexedDB code.

content/browser/indexed_db/indexed_db_backing_store.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 CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_BACKING_STORE_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_BACKING_STORE_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 149 matching lines @@
     leveldb::Status GetBlobInfoForRecord(
         int64 database_id,
         const std::string& object_store_data_key,
         IndexedDBValue* value);
 
     // This holds a BlobEntryKey and the encoded IndexedDBBlobInfo vector stored
     // under that key.
     typedef std::vector<std::pair<BlobEntryKey, std::string> >
         BlobEntryKeyValuePairVec;
 
-    class WriteDescriptor {
+    class CONTENT_EXPORT WriteDescriptor {
      public:
       WriteDescriptor(const GURL& url,
                       int64_t key,
                       int64_t size,
                       base::Time last_modified);
       WriteDescriptor(const base::FilePath& path,
                       int64_t key,
                       int64_t size,
                       base::Time last_modified);
+      WriteDescriptor(const WriteDescriptor& other);
+      ~WriteDescriptor();
+      WriteDescriptor& operator=(const WriteDescriptor& other);
 
       bool is_file() const { return is_file_; }
       const GURL& url() const {
         DCHECK(!is_file_);
         return url_;
       }
       const base::FilePath& file_path() const {
         DCHECK(is_file_);
         return file_path_;
       }
@@ skipping 459 matching lines @@
   // complete. While > 0, temporary journal entries may exist so out-of-band
   // journal cleaning must be deferred.
   size_t committing_transaction_count_;
 
   DISALLOW_COPY_AND_ASSIGN(IndexedDBBackingStore);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_BACKING_STORE_H_