Clear browsing data clears data for type kStorageTypeTemporary but not for kStorageTypeSyncable.

content/browser/storage_partition_impl.cc

Index: content/browser/storage_partition_impl.cc
diff --git a/content/browser/storage_partition_impl.cc b/content/browser/storage_partition_impl.cc
index 44da402594d2e46cc0ea4e3fbea7695705e6f851..ab0e7a567215a27e2e30a9cd9ff18fde6144c241 100644
--- a/content/browser/storage_partition_impl.cc
+++ b/content/browser/storage_partition_impl.cc
@@ -75,6 +75,11 @@ void ClearOriginOnIOThread(
                                        origins,
                                        quota::kStorageTypePersistent);
   }
+  if (storage_mask & StoragePartition::kQuotaManagedSyncableStorage) {
+    ClearQuotaManagedOriginsOnIOThread(quota_manager,
+                                       origins,
+                                       quota::kStorageTypeSyncable);
+  }
 }
 
 void ClearAllDataOnIOThread(
@@ -103,6 +108,11 @@ void ClearAllDataOnIOThread(
         quota::kStorageTypePersistent, base::Time(),
         base::Bind(&ClearQuotaManagedOriginsOnIOThread, quota_manager));
   }
+  if (storage_mask & StoragePartition::kQuotaManagedSyncableStorage) {
+    quota_manager->GetOriginsModifiedSince(
+        quota::kStorageTypeSyncable, base::Time(),
+        base::Bind(&ClearQuotaManagedOriginsOnIOThread, quota_manager));
+  }
 }
 
 void ClearedShaderCacheOnIOThread(base::Closure callback) {