Implement learn more bubble on views.

chrome/browser/ui/autofill/autofill_dialog_types.h

Index: chrome/browser/ui/autofill/autofill_dialog_types.h
diff --git a/chrome/browser/ui/autofill/autofill_dialog_types.h b/chrome/browser/ui/autofill/autofill_dialog_types.h
index a06f5b0cf08f1f1436adaf633771f299c1bb1972..f6c4c7dc045c53f3c1d14a180729ae802d0f4b7f 100644
--- a/chrome/browser/ui/autofill/autofill_dialog_types.h
+++ b/chrome/browser/ui/autofill/autofill_dialog_types.h
@@ -109,10 +109,10 @@ class DialogNotification {
 
   const gfx::Range& link_range() const { return link_range_; }
 
-  void set_tooltip_text(const string16& tooltip_text) {
-    tooltip_text_ = tooltip_text;
+  void set_learn_more_text(const string16& learn_more_text) {
+    learn_more_text_ = learn_more_text;
   }
-  const string16& tooltip_text() const { return tooltip_text_; }
+  const string16& learn_more_text() const { return learn_more_text_; }
 
   void set_checked(bool checked) { checked_ = checked; }
   bool checked() const { return checked_; }
@@ -126,9 +126,9 @@ class DialogNotification {
   GURL link_url_;
   gfx::Range link_range_;
 
-  // When non-empty, indicates that a tooltip should be shown on the end of
-  // the notification.
-  string16 tooltip_text_;
+  // When non-empty, indicates that a "learn more" icon should be shown on the
+  // end of the notification (which, when hovered, shows an info bubble).
+  string16 learn_more_text_;
 
   // Whether the dialog notification's checkbox should be checked. Only applies
   // when |HasCheckbox()| is true.