Use WebCore:DateTimeChooser for date/time form types instead of considering them text fields.

content/renderer/renderer_date_time_picker.h

Index: content/renderer/renderer_date_time_picker.h
diff --git a/content/renderer/renderer_date_time_picker.h b/content/renderer/renderer_date_time_picker.h
new file mode 100644
index 0000000000000000000000000000000000000000..f5c5d5382218b32dfd735dc08bd8c2e8c10d052c
--- /dev/null
+++ b/content/renderer/renderer_date_time_picker.h
@@ -0,0 +1,45 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_RENDERER_RENDERER_DATE_TIME_PICKER_IMPL_H_
+#define CONTENT_RENDERER_RENDERER_DATE_TIME_PICKER_IMPL_H_
+
+#include "base/basictypes.h"
+#include "content/public/renderer/render_view_observer.h"
+#include "ui/base/ime/text_input_type.h"
+
+namespace WebKit {
+class WebDateTimeChooserCompletion;
+class WebDateTimeChooserParams;
+}  // namespace WebKit
+
+namespace content {
+class RenderViewImpl;
+
+class RendererDateTimePicker : public RenderViewObserver {
+ public:
+  RendererDateTimePicker(
+      RenderViewImpl* sender,
+      const WebKit::WebDateTimeChooserParams&,
+      WebKit::WebDateTimeChooserCompletion*);
+  virtual ~RendererDateTimePicker();
+
+  bool Open();
+
+ private:
+  void OnReplaceDateTime(const string16& new_date);
+  void OnCancel();
+
+  // RenderViewObserver
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+
+  const WebKit::WebDateTimeChooserParams& chooser_params_;
+  WebKit::WebDateTimeChooserCompletion* chooser_completion_;  // Not owned by us
+
+  DISALLOW_COPY_AND_ASSIGN(RendererDateTimePicker);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_RENDERER_DATE_TIME_PICKER_IMPL_H_