Autocheckout: parse multiple clicks setting in autofill response.

components/autofill/browser/autofill_xml_parser.h

Index: components/autofill/browser/autofill_xml_parser.h
diff --git a/components/autofill/browser/autofill_xml_parser.h b/components/autofill/browser/autofill_xml_parser.h
index 4d1498fb5b1d1a2be6cce113262de991183cb3f3..49eb12d8696d3c691899ecde66fc6a89f529e434 100644
--- a/components/autofill/browser/autofill_xml_parser.h
+++ b/components/autofill/browser/autofill_xml_parser.h
@@ -89,6 +89,19 @@ class AutofillQueryXmlParser : public AutofillXmlParser {
                             const char* name,
                             const char** attrs) OVERRIDE;
 
+  // A helper function to parse a <click_elements_before_formfill> or
+  // <click_elements_after_formfill>. A new |WebElementDescriptor| object will
+  // be appended to |click_elements|.
+  void HandleClickElement(std::vector<WebElementDescriptor>* click_elements);
+
+  // A helper function to parse a |WebElementDescriptor|.
+  // |context| is the current parsing context.
+  // |attrs| is the list of attributes (names and values) for the element.
+  // |element_descriptor| will be populated by this function.
+  void ParseElementDescriptor(buzz::XmlParseContext* context,
+                              const char* const* attrs,
+                              WebElementDescriptor* element_descriptor);
+
   // A helper function to retrieve integer values from strings.  Raises an
   // XML parse error if it fails.
   // |context| is the current parsing context.
@@ -109,6 +122,9 @@ class AutofillQueryXmlParser : public AutofillXmlParser {
   // Page metadata for multipage autofill flow.
   AutocheckoutPageMetaData* page_meta_data_;
 
+  // The click element the parser is currently processing.
+  WebElementDescriptor* current_click_element_;
+
   DISALLOW_COPY_AND_ASSIGN(AutofillQueryXmlParser);
 };