Make FileSystemOperation NOT self-destruct

webkit/browser/fileapi/file_system_operation_context.h

 // Copyright (c) 2012 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 WEBKIT_BROWSER_FILEAPI_FILE_SYSTEM_OPERATION_CONTEXT_H_
 #define WEBKIT_BROWSER_FILEAPI_FILE_SYSTEM_OPERATION_CONTEXT_H_
 
 #include "base/files/file_path.h"
 #include "base/supports_user_data.h"
 #include "base/threading/thread_checker.h"
@@ skipping 20 matching lines @@
  public:
   explicit FileSystemOperationContext(FileSystemContext* context);
 
   // Specifies |task_runner| which the operation is performed on.
   FileSystemOperationContext(FileSystemContext* context,
                              base::SequencedTaskRunner* task_runner);
 
   virtual ~FileSystemOperationContext();
 
   FileSystemContext* file_system_context() const {
-    return file_system_context_;
+    return file_system_context_.get();
   }
 
   // Updates the current remaining quota.
   // This can be called to update the remaining quota during the operation.
   void set_allowed_bytes_growth(const int64& allowed_bytes_growth) {
     allowed_bytes_growth_ = allowed_bytes_growth;
   }
 
   // Returns the current remaining quota.
   int64 allowed_bytes_growth() const { return allowed_bytes_growth_; }
@@ skipping 41 matching lines @@
   template <typename T> class ValueAdapter
       : public base::SupportsUserData::Data {
    public:
     ValueAdapter(const T& value) : value_(value) {}
     const T& value() const { return value_; }
    private:
     T value_;
     DISALLOW_COPY_AND_ASSIGN(ValueAdapter);
   };
 
-  FileSystemContext* file_system_context_;
+  scoped_refptr<FileSystemContext> file_system_context_;
   scoped_refptr<base::SequencedTaskRunner> task_runner_;
 
   // The current remaining quota, used by ObfuscatedFileUtil.
   int64 allowed_bytes_growth_;
 
   // The current quota limit type, used by ObfuscatedFileUtil.
   quota::QuotaLimitType quota_limit_type_;
 
   // Observers attached to this context.
   ChangeObserverList change_observers_;
   UpdateObserverList update_observers_;
 
   // Root path for the operation, used by LocalFileUtil.
   base::FilePath root_path_;
 
   // Used to check its setters are not called on arbitrary thread.
   base::ThreadChecker setter_thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(FileSystemOperationContext);
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_BROWSER_FILEAPI_FILE_SYSTEM_OPERATION_CONTEXT_H_