Web MIDI: implement MIDIErrorCallback

Source/modules/webmidi/MIDIErrorCallback.h

Index: Source/modules/webmidi/MIDIErrorCallback.h
diff --git a/Source/modules/quota/StorageQuotaCallback.h b/Source/modules/webmidi/MIDIErrorCallback.h
similarity index 78%
copy from Source/modules/quota/StorageQuotaCallback.h
copy to Source/modules/webmidi/MIDIErrorCallback.h
index 491452b4d1f8b91d162f031b59e7999453f08637..7a3104424156ab2937d26598ceb4badd2f324cbb 100644
--- a/Source/modules/quota/StorageQuotaCallback.h
+++ b/Source/modules/webmidi/MIDIErrorCallback.h
@@ -28,19 +28,27 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef StorageQuotaCallback_h
-#define StorageQuotaCallback_h
+#ifndef MIDIErrorCallback_h
+#define MIDIErrorCallback_h
 
+#include <wtf/PassRefPtr.h>
 #include <wtf/RefCounted.h>
 
 namespace WebCore {
 
-class StorageQuotaCallback : public RefCounted<StorageQuotaCallback> {
+class DOMError;
+class ScriptExecutionContext;
+class SecurityExecutionContext;

[Chris Rogers, 2013/04/23 20:35:23]

seems like SecurityExecutionContext is not needed - can be removed

[Takashi Toyoshima, 2013/04/24 01:31:51]

Done.

+
+class MIDIErrorCallback : public RefCounted<MIDIErrorCallback> {
 public:
-    virtual ~StorageQuotaCallback() { }
-    virtual bool handleEvent(unsigned long long grantedQuotaInBytes) = 0;
+    virtual ~MIDIErrorCallback() { }
+    virtual bool handleEvent(DOMError*) = 0;
+
+    // Helper to post callback task.
+    void scheduleCallback(ScriptExecutionContext*, PassRefPtr<DOMError>);
 };
 
 } // namespace
 
-#endif // StorageQuotaCallback_h
+#endif // MIDIErrorCallback_h