Replace the Persistent in SQLiteDatabase with a member and trace it.

R=tkent@chromium.org
BUG=

Review URL: https://codereview.chromium.org/204543005

git-svn-id: svn://svn.chromium.org/blink/trunk@169944 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/modules/webdatabase/DatabaseBackendBase.cpp

@@ -250,6 +250,7 @@ DatabaseBackendBase::~DatabaseBackendBase()
 
 void DatabaseBackendBase::trace(Visitor* visitor)
 {
+    visitor->trace(m_sqliteDatabase);
     visitor->trace(m_databaseAuthorizer);
 }
 

third_party/WebKit/Source/modules/webdatabase/sqlite/SQLiteDatabase.cpp

@@ -421,4 +421,9 @@ bool SQLiteDatabase::turnOnIncrementalAutoVacuum()
     }
 }
 
+void SQLiteDatabase::trace(Visitor* visitor)
+{
+    visitor->trace(m_authorizer);
+}
+
 } // namespace WebCore

third_party/WebKit/Source/modules/webdatabase/sqlite/SQLiteDatabase.h

@@ -53,6 +53,7 @@ extern const int SQLResultInterrupt;
 extern const int SQLResultConstraint;
 
 class SQLiteDatabase {
+    DISALLOW_ALLOCATION();
     WTF_MAKE_NONCOPYABLE(SQLiteDatabase);
     friend class SQLiteTransaction;
 public:
@@ -115,6 +116,8 @@ public:
     enum AutoVacuumPragma { AutoVacuumNone = 0, AutoVacuumFull = 1, AutoVacuumIncremental = 2 };
     bool turnOnIncrementalAutoVacuum();
 
+    void trace(Visitor*);
+
 private:
     static int authorizerFunction(void*, int, const char*, const char*, const char*, const char*);
 
@@ -129,7 +132,7 @@ private:
     bool m_sharable;
 
     Mutex m_authorizerLock;
-    RefPtrWillBePersistent<DatabaseAuthorizer> m_authorizer;
+    RefPtrWillBeMember<DatabaseAuthorizer> m_authorizer;
 
     Mutex m_lockingMutex;
     ThreadIdentifier m_openingThread;