Implement learn more bubble on views.

chrome/browser/ui/views/autofill/learn_more_icon.cc

+// Copyright 2013 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.
+
+#include "chrome/browser/ui/views/autofill/learn_more_icon.h"
+
+#include "grit/theme_resources.h"
+#include "ui/base/resource/resource_bundle.h"
+
+namespace autofill {
+
+LearnMoreIcon::LearnMoreIcon(
+    const base::string16& learn_more_text,
+    const base::WeakPtr<LearnMoreIconDelegate>& delegate)
+    : learn_more_text_(learn_more_text),
+      delegate_(delegate) {
+  ChangeImageTo(IDR_AUTOFILL_LEARN_MORE_ICON);
+}
+
+LearnMoreIcon::~LearnMoreIcon() {}
+
+const char LearnMoreIcon::kViewClassName[] = "autofill/LearnMoreIcon";
+
+const char* LearnMoreIcon::GetClassName() const {
+  return kViewClassName;
+}
+
+void LearnMoreIcon::OnMouseEntered(const ui::MouseEvent& event) {
+  if (delegate_)
+    delegate_->OnLearnMoreIconMouseEntered(this);
+  ChangeImageTo(IDR_AUTOFILL_LEARN_MORE_ICON_H);
+}
+
+void LearnMoreIcon::OnMouseExited(const ui::MouseEvent& event) {
+  if (delegate_)
+    delegate_->OnLearnMoreIconMouseExited(this);
+  ChangeImageTo(IDR_AUTOFILL_LEARN_MORE_ICON);
+}
+
+void LearnMoreIcon::ChangeImageTo(int idr) {
+  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
+  SetImage(rb.GetImageNamed(idr).ToImageSkia());
+}
+
+}  // namespace autofill