Replace xmllite with libxml in autofill

components/autofill/core/browser/autofill_xml_parser.h

 // 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.
 
 #ifndef COMPONENTS_AUTOFILL_CORE_BROWSER_AUTOFILL_XML_PARSER_H_
 #define COMPONENTS_AUTOFILL_CORE_BROWSER_AUTOFILL_XML_PARSER_H_
 
 #include <string>
 #include <vector>
 
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "base/memory/scoped_ptr.h"
-#include "components/autofill/core/browser/autofill_server_field_info.h"
-#include "components/autofill/core/browser/field_types.h"
 #include "components/autofill/core/browser/form_structure.h"
-#include "third_party/webrtc/libjingle/xmllite/xmlparser.h"
 
 namespace autofill {
 
-// The base class that contains common functionality between
-// AutofillQueryXmlParser and AutofillUploadXmlParser.
-class AutofillXmlParser : public buzz::XmlParseHandler {
- public:
-  AutofillXmlParser();
-  ~AutofillXmlParser() override;
+struct AutofillServerFieldInfo;
 
-  // Returns true if no parsing errors were encountered.
-  bool succeeded() const { return succeeded_; }
-
- private:
-  // A callback for the end of an </element>, called by Expat.
-  // |context| is a parsing context used to resolve element/attribute names.
-  // |name| is the name of the element.
-  void EndElement(buzz::XmlParseContext* context, const char* name) override;
-
-  // The callback for character data between tags (<element>text...</element>).
-  // |context| is a parsing context used to resolve element/attribute names.
-  // |text| is a pointer to the beginning of character data (not null
-  // terminated).
-  // |len| is the length of the string pointed to by text.
-  void CharacterData(buzz::XmlParseContext* context,
-                     const char* text,
-                     int len) override;
-
-  // The callback for parsing errors.
-  // |context| is a parsing context used to resolve names.
-  // |error_code| is a code representing the parsing error.
-  void Error(buzz::XmlParseContext* context, XML_Error error_code) override;
-
-  // True if parsing succeeded.
-  bool succeeded_;
-
-  DISALLOW_COPY_AND_ASSIGN(AutofillXmlParser);
-};
-
-// The XML parse handler for parsing Autofill query responses.  A typical
-// response looks like:
+// The XML parser for parsing Autofill query responses.  A typical response
+// looks like:
 //
-// <autofillqueryresponse>
+// <autofillqueryresponse uploadrequired="true">
 //   <field autofilltype="0" />
 //   <field autofilltype="1" />
 //   <field autofilltype="3" />
 //   <field autofilltype="2" />
+//   <field autofilltype="61" defaultvalue="default" />
 // </autofillqueryresponse>
 //
 // Fields are returned in the same order they were sent to the server.
 // autofilltype: The server's guess at what type of field this is.  0
 // is unknown, other types are documented in
 // components/autofill/core/browser/field_types.h.
-class AutofillQueryXmlParser : public AutofillXmlParser {
- public:
-  AutofillQueryXmlParser(std::vector<AutofillServerFieldInfo>* field_infos,
-                         UploadRequired* upload_required);
-  ~AutofillQueryXmlParser() override;
+//
+// Parses |xml| and on success returns true and fills |field_infos| based on the
+// <field> tags and |upload_required| based on the uploadrequired attribute of
+// the autofillqueryresponse tag. On failure returns false.
+bool ParseAutofillQueryXml(std::string xml,
+                           std::vector<AutofillServerFieldInfo>* field_infos,
+                           UploadRequired* upload_required);
 
- private:
-  // A callback for the beginning of a new <element>, called by Expat.
-  // |context| is a parsing context used to resolve element/attribute names.
-  // |name| is the name of the element.
-  // |attrs| is the list of attributes (names and values) for the element.
-  void StartElement(buzz::XmlParseContext* context,
-                    const char* name,
-                    const char** attrs) override;
-
-  // A helper function to retrieve integer values from strings.  Raises an
-  // XML parse error if it fails.
-  // |context| is the current parsing context.
-  // |value| is the string to convert.
-  int GetIntValue(buzz::XmlParseContext* context, const char* attribute);
-
-  // The parsed <field type, default value> pairs.
-  std::vector<AutofillServerFieldInfo>* field_infos_;
-
-  // A flag indicating whether the client should upload Autofill data when this
-  // form is submitted.
-  UploadRequired* upload_required_;
-
-  DISALLOW_COPY_AND_ASSIGN(AutofillQueryXmlParser);
-};
-
-// The XML parser for handling Autofill upload responses.  Typical upload
-// responses look like:
+// The XML parser for Autofill upload responses.  Typical upload responses look
+// like:
 //
 // <autofilluploadresponse negativeuploadrate="0.00125" positiveuploadrate="1"/>
 //
 // The positive upload rate is the percentage of uploads to send to the server
 // when something in the users profile matches what they have entered in a form.
 // The negative upload rate is the percentage of uploads to send when nothing in
 // the form matches what's in the users profile.
 // The negative upload rate is typically much lower than the positive upload
 // rate.
-class AutofillUploadXmlParser : public AutofillXmlParser {
- public:
-  AutofillUploadXmlParser(double* positive_upload_rate,
-                          double* negative_upload_rate);
-
- private:
-  // A callback for the beginning of a new <element>, called by Expat.
-  // |context| is a parsing context used to resolve element/attribute names.
-  // |name| is the name of the element.
-  // |attrs| is the list of attributes (names and values) for the element.
-  void StartElement(buzz::XmlParseContext* context,
-                    const char* name,
-                    const char** attrs) override;
-
-  // A helper function to retrieve double values from strings.  Raises an XML
-  // parse error if it fails.
-  // |context| is the current parsing context.
-  // |value| is the string to convert.
-  double GetDoubleValue(buzz::XmlParseContext* context, const char* attribute);
-
-  // True if parsing succeeded.
-  bool succeeded_;
-
-  double* positive_upload_rate_;
-  double* negative_upload_rate_;
-
-  DISALLOW_COPY_AND_ASSIGN(AutofillUploadXmlParser);
-};
+//
+// Parses |xml| and on success returns true and fills the upload rates based on
+// the attributes of the autofilluploadresponse tag. On failure returns false.
+bool ParseAutofillUploadXml(std::string xml,
+                            double* positive_upload_rate,
+                            double* negative_upload_rate);
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CORE_BROWSER_AUTOFILL_XML_PARSER_H_