Migrates legacy packaged app data when it's upgraded to a platform app

content/public/browser/indexed_db_context.h

Index: content/public/browser/indexed_db_context.h
diff --git a/content/public/browser/indexed_db_context.h b/content/public/browser/indexed_db_context.h
index af469e33027e45c9bb1e113b0f1870352bb7beeb..82022f40062e408bbce0fe7317d46d19bf1fc2d8 100644
--- a/content/public/browser/indexed_db_context.h
+++ b/content/public/browser/indexed_db_context.h
@@ -34,9 +34,13 @@ class IndexedDBContext : public base::RefCountedThreadSafe<IndexedDBContext> {
   // Deletes all indexed db files for the given origin.
   virtual void DeleteForOrigin(const GURL& origin_url) = 0;
 
+  // Copies the indexed db files from this context to another. The
+  // indexed db directory in the destination context needs to be empty.
+  virtual void CopyOriginData(const GURL& origin_url,
+                              IndexedDBContext* dest_context) = 0;
+
   // Get the file name of the local storage file for the given origin.
-  virtual base::FilePath GetFilePathForTesting(
-      const std::string& origin_id) const = 0;
+  virtual base::FilePath GetFilePath(const GURL& origin_url) const = 0;
   // Set the task runner for tests if browser main loop is not initialized.
   virtual void SetTaskRunnerForTesting(
       base::SequencedTaskRunner* task_runner) = 0;