Add support for autofilling radio buttons and checkboxes.

chrome/renderer/autofill/form_cache.h

Index: chrome/renderer/autofill/form_cache.h
diff --git a/chrome/renderer/autofill/form_cache.h b/chrome/renderer/autofill/form_cache.h
index 43bd651eb8c03d673f4414a27d9eb031c5c28f0c..e621345f9b1ef3e012e9168e93ce49cad1f2a672 100644
--- a/chrome/renderer/autofill/form_cache.h
+++ b/chrome/renderer/autofill/form_cache.h
@@ -19,6 +19,7 @@ class WebDocument;
 class WebFrame;
 class WebInputElement;
 class WebSelectElement;
+class WebFormControlElement;

[Ilya Sherman, 2012/12/11 05:56:19]

nit: This forward declaration doesn't seem to be necessary.

[Raman Kakilate, 2012/12/11 17:45:45]

Done.

 }
 
 namespace autofill {
@@ -54,6 +55,9 @@ class FormCache {
   // The cached initial values for <select> elements.
   std::map<const WebKit::WebSelectElement, string16> initial_select_values_;
 
+  // The cached initial values for checkable <input> elements.
+  std::map<const WebKit::WebInputElement, bool> initial_checked_state_;
+
   DISALLOW_COPY_AND_ASSIGN(FormCache);
 };