Migrate WTF::HashMap::add() to ::insert()

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

Index: third_party/WebKit/Source/modules/webdatabase/QuotaTracker.cpp
diff --git a/third_party/WebKit/Source/modules/webdatabase/QuotaTracker.cpp b/third_party/WebKit/Source/modules/webdatabase/QuotaTracker.cpp
index 326a22099cdd98d19369d6d87354414faa0e6db2..b4b0ece3c3947a55816dbeae370f1a93023845ae 100644
--- a/third_party/WebKit/Source/modules/webdatabase/QuotaTracker.cpp
+++ b/third_party/WebKit/Source/modules/webdatabase/QuotaTracker.cpp
@@ -73,7 +73,7 @@ void QuotaTracker::updateDatabaseSize(SecurityOrigin* origin,
                                       unsigned long long databaseSize) {
   MutexLocker lockData(m_dataGuard);
   HashMap<String, SizeMap>::ValueType* it =
-      m_databaseSizes.add(origin->toRawString(), SizeMap()).storedValue;
+      m_databaseSizes.insert(origin->toRawString(), SizeMap()).storedValue;
   it->value.set(databaseName, databaseSize);
 }