Remove FileError interface

third_party/WebKit/Source/modules/filesystem/DirectoryReader.cpp

Index: third_party/WebKit/Source/modules/filesystem/DirectoryReader.cpp
diff --git a/third_party/WebKit/Source/modules/filesystem/DirectoryReader.cpp b/third_party/WebKit/Source/modules/filesystem/DirectoryReader.cpp
index 8143c8d2eec64d1e5ee12a7ff4b6774cb4090853..6b040367f9f587c8513a236e62e1ab9031b82462 100644
--- a/third_party/WebKit/Source/modules/filesystem/DirectoryReader.cpp
+++ b/third_party/WebKit/Source/modules/filesystem/DirectoryReader.cpp
@@ -67,7 +67,12 @@ public:
     {
     }
 
-    void handleEvent(FileError* error) override
+    void handleEvent(DOMException* error) override
+    {
+        NOTREACHED();
+    }
+
+    void handleEvent(FileError::ErrorCode error) override
     {
         m_reader->onError(error);
     }
@@ -106,7 +111,7 @@ void DirectoryReader::readEntries(EntriesCallback* entriesCallback, ErrorCallbac
 
     if (m_entriesCallback) {
         // Non-null m_entriesCallback means multiple readEntries() calls are made concurrently. We don't allow doing it.
-        filesystem()->scheduleCallback(errorCallback, FileError::create(FileError::INVALID_STATE_ERR));
+        filesystem()->scheduleCallback(errorCallback, FileError::INVALID_STATE_ERR);
         return;
     }
 
@@ -132,7 +137,7 @@ void DirectoryReader::addEntries(const EntryHeapVector& entries)
     }
 }
 
-void DirectoryReader::onError(FileError* error)
+void DirectoryReader::onError(FileError::ErrorCode error)
 {
     m_error = error;
     m_entriesCallback = nullptr;
@@ -145,7 +150,6 @@ void DirectoryReader::onError(FileError* error)
 DEFINE_TRACE(DirectoryReader)
 {
     visitor->trace(m_entries);
-    visitor->trace(m_error);
     visitor->trace(m_entriesCallback);
     visitor->trace(m_errorCallback);
     DirectoryReaderBase::trace(visitor);