Moved chrome/common/json_schema to components/json_schema.

chrome/common/json_schema/json_schema_validator.cc

Index: chrome/common/json_schema/json_schema_validator.cc
diff --git a/chrome/common/json_schema/json_schema_validator.cc b/chrome/common/json_schema/json_schema_validator.cc
deleted file mode 100644
index 576923b6b48addd3a42558b25342feca776a596f..0000000000000000000000000000000000000000
--- a/chrome/common/json_schema/json_schema_validator.cc
+++ /dev/null
@@ -1,727 +0,0 @@
-// Copyright (c) 2011 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/common/json_schema/json_schema_validator.h"
-
-#include <algorithm>
-#include <cfloat>
-#include <cmath>
-
-#include "base/json/json_reader.h"
-#include "base/strings/string_number_conversions.h"
-#include "base/strings/string_util.h"
-#include "base/strings/stringprintf.h"
-#include "base/values.h"
-#include "chrome/common/json_schema/json_schema_constants.h"
-#include "ui/base/l10n/l10n_util.h"
-
-namespace schema = json_schema_constants;
-
-namespace {
-
-double GetNumberValue(const base::Value* value) {
-  double result = 0;
-  CHECK(value->GetAsDouble(&result))
-      << "Unexpected value type: " << value->GetType();
-  return result;
-}
-
-bool IsValidType(const std::string& type) {
-  static const char* kValidTypes[] = {
-    schema::kAny,
-    schema::kArray,
-    schema::kBoolean,
-    schema::kInteger,
-    schema::kNull,
-    schema::kNumber,
-    schema::kObject,
-    schema::kString,
-  };
-  const char** end = kValidTypes + arraysize(kValidTypes);
-  return std::find(kValidTypes, end, type) != end;
-}
-
-// Maps a schema attribute name to its expected type.
-struct ExpectedType {
-  const char* key;
-  base::Value::Type type;
-};
-
-// Helper for std::lower_bound.
-bool CompareToString(const ExpectedType& entry, const std::string& key) {
-  return entry.key < key;
-}
-
-bool IsValidSchema(const base::DictionaryValue* dict, std::string* error) {
-  // This array must be sorted, so that std::lower_bound can perform a
-  // binary search.
-  static const ExpectedType kExpectedTypes[] = {
-    // Note: kRef == "$ref", kSchema == "$schema"
-    { schema::kRef,                     base::Value::TYPE_STRING      },
-    { schema::kSchema,                  base::Value::TYPE_STRING      },
-
-    { schema::kAdditionalProperties,    base::Value::TYPE_DICTIONARY  },
-    { schema::kChoices,                 base::Value::TYPE_LIST        },
-    { schema::kDescription,             base::Value::TYPE_STRING      },
-    { schema::kEnum,                    base::Value::TYPE_LIST        },
-    { schema::kId,                      base::Value::TYPE_STRING      },
-    { schema::kMaxItems,                base::Value::TYPE_INTEGER     },
-    { schema::kMaxLength,               base::Value::TYPE_INTEGER     },
-    { schema::kMaximum,                 base::Value::TYPE_DOUBLE      },
-    { schema::kMinItems,                base::Value::TYPE_INTEGER     },
-    { schema::kMinLength,               base::Value::TYPE_INTEGER     },
-    { schema::kMinimum,                 base::Value::TYPE_DOUBLE      },
-    { schema::kOptional,                base::Value::TYPE_BOOLEAN     },
-    { schema::kProperties,              base::Value::TYPE_DICTIONARY  },
-    { schema::kTitle,                   base::Value::TYPE_STRING      },
-  };
-
-  bool has_type = false;
-  const base::ListValue* list_value = NULL;
-  const base::DictionaryValue* dictionary_value = NULL;
-  std::string string_value;
-
-  for (base::DictionaryValue::Iterator it(*dict); !it.IsAtEnd(); it.Advance()) {
-    // Validate the "type" attribute, which may be a string or a list.
-    if (it.key() == schema::kType) {
-      switch (it.value().GetType()) {
-        case base::Value::TYPE_STRING:
-          it.value().GetAsString(&string_value);
-          if (!IsValidType(string_value)) {
-            *error = "Invalid value for type attribute";
-            return false;
-          }
-          break;
-        case base::Value::TYPE_LIST:
-          it.value().GetAsList(&list_value);
-          for (size_t i = 0; i < list_value->GetSize(); ++i) {
-            if (!list_value->GetString(i, &string_value) ||
-                !IsValidType(string_value)) {
-              *error = "Invalid value for type attribute";
-              return false;
-            }
-          }
-          break;
-        default:
-          *error = "Invalid value for type attribute";
-          return false;
-      }
-      has_type = true;
-      continue;
-    }
-
-    // Validate the "items" attribute, which is a schema or a list of schemas.
-    if (it.key() == schema::kItems) {
-      if (it.value().GetAsDictionary(&dictionary_value)) {
-        if (!IsValidSchema(dictionary_value, error)) {
-          DCHECK(!error->empty());
-          return false;
-        }
-      } else if (it.value().GetAsList(&list_value)) {
-        for (size_t i = 0; i < list_value->GetSize(); ++i) {
-          if (!list_value->GetDictionary(i, &dictionary_value)) {
-            *error = base::StringPrintf(
-                "Invalid entry in items attribute at index %d",
-                static_cast<int>(i));
-            return false;
-          }
-          if (!IsValidSchema(dictionary_value, error)) {
-            DCHECK(!error->empty());
-            return false;
-          }
-        }
-      } else {
-        *error = "Invalid value for items attribute";
-        return false;
-      }
-      continue;
-    }
-
-    // All the other attributes have a single valid type.
-    const ExpectedType* end = kExpectedTypes + arraysize(kExpectedTypes);
-    const ExpectedType* entry = std::lower_bound(
-        kExpectedTypes, end, it.key(), CompareToString);
-    if (entry == end || entry->key != it.key()) {
-      *error = base::StringPrintf("Invalid attribute %s", it.key().c_str());
-      return false;
-    }
-    if (!it.value().IsType(entry->type)) {
-      *error = base::StringPrintf("Invalid value for %s attribute",
-                                  it.key().c_str());
-      return false;
-    }
-
-    // base::Value::TYPE_INTEGER attributes must be >= 0.
-    // This applies to "minItems", "maxItems", "minLength" and "maxLength".
-    if (it.value().IsType(base::Value::TYPE_INTEGER)) {
-      int integer_value;
-      it.value().GetAsInteger(&integer_value);
-      if (integer_value < 0) {
-        *error = base::StringPrintf("Value of %s must be >= 0, got %d",
-                                    it.key().c_str(), integer_value);
-        return false;
-      }
-    }
-
-    // Validate the "properties" attribute. Each entry maps a key to a schema.
-    if (it.key() == schema::kProperties) {
-      it.value().GetAsDictionary(&dictionary_value);
-      for (base::DictionaryValue::Iterator it(*dictionary_value);
-           !it.IsAtEnd(); it.Advance()) {
-        if (!it.value().GetAsDictionary(&dictionary_value)) {
-          *error = "Invalid value for properties attribute";
-          return false;
-        }
-        if (!IsValidSchema(dictionary_value, error)) {
-          DCHECK(!error->empty());
-          return false;
-        }
-      }
-    }
-
-    // Validate "additionalProperties" attribute, which is a schema.
-    if (it.key() == schema::kAdditionalProperties) {
-      it.value().GetAsDictionary(&dictionary_value);
-      if (!IsValidSchema(dictionary_value, error)) {
-        DCHECK(!error->empty());
-        return false;
-      }
-    }
-
-    // Validate the values contained in an "enum" attribute.
-    if (it.key() == schema::kEnum) {
-      it.value().GetAsList(&list_value);
-      for (size_t i = 0; i < list_value->GetSize(); ++i) {
-        const base::Value* value = NULL;
-        list_value->Get(i, &value);
-        switch (value->GetType()) {
-          case base::Value::TYPE_NULL:
-          case base::Value::TYPE_BOOLEAN:
-          case base::Value::TYPE_INTEGER:
-          case base::Value::TYPE_DOUBLE:
-          case base::Value::TYPE_STRING:
-            break;
-          default:
-            *error = "Invalid value in enum attribute";
-            return false;
-        }
-      }
-    }
-
-    // Validate the schemas contained in a "choices" attribute.
-    if (it.key() == schema::kChoices) {
-      it.value().GetAsList(&list_value);
-      for (size_t i = 0; i < list_value->GetSize(); ++i) {
-        if (!list_value->GetDictionary(i, &dictionary_value)) {
-          *error = "Invalid choices attribute";
-          return false;
-        }
-        if (!IsValidSchema(dictionary_value, error)) {
-          DCHECK(!error->empty());
-          return false;
-        }
-      }
-    }
-  }
-
-  if (!has_type) {
-    *error = "Schema must have a type attribute";
-    return false;
-  }
-
-  return true;
-}
-
-}  // namespace
-
-
-JSONSchemaValidator::Error::Error() {
-}
-
-JSONSchemaValidator::Error::Error(const std::string& message)
-    : path(message) {
-}
-
-JSONSchemaValidator::Error::Error(const std::string& path,
-                                  const std::string& message)
-    : path(path), message(message) {
-}
-
-
-const char JSONSchemaValidator::kUnknownTypeReference[] =
-    "Unknown schema reference: *.";
-const char JSONSchemaValidator::kInvalidChoice[] =
-    "Value does not match any valid type choices.";
-const char JSONSchemaValidator::kInvalidEnum[] =
-    "Value does not match any valid enum choices.";
-const char JSONSchemaValidator::kObjectPropertyIsRequired[] =
-    "Property is required.";
-const char JSONSchemaValidator::kUnexpectedProperty[] =
-    "Unexpected property.";
-const char JSONSchemaValidator::kArrayMinItems[] =
-    "Array must have at least * items.";
-const char JSONSchemaValidator::kArrayMaxItems[] =
-    "Array must not have more than * items.";
-const char JSONSchemaValidator::kArrayItemRequired[] =
-    "Item is required.";
-const char JSONSchemaValidator::kStringMinLength[] =
-    "String must be at least * characters long.";
-const char JSONSchemaValidator::kStringMaxLength[] =
-    "String must not be more than * characters long.";
-const char JSONSchemaValidator::kStringPattern[] =
-    "String must match the pattern: *.";
-const char JSONSchemaValidator::kNumberMinimum[] =
-    "Value must not be less than *.";
-const char JSONSchemaValidator::kNumberMaximum[] =
-    "Value must not be greater than *.";
-const char JSONSchemaValidator::kInvalidType[] =
-    "Expected '*' but got '*'.";
-const char JSONSchemaValidator::kInvalidTypeIntegerNumber[] =
-    "Expected 'integer' but got 'number', consider using Math.round().";
-
-
-// static
-std::string JSONSchemaValidator::GetJSONSchemaType(const base::Value* value) {
-  switch (value->GetType()) {
-    case base::Value::TYPE_NULL:
-      return schema::kNull;
-    case base::Value::TYPE_BOOLEAN:
-      return schema::kBoolean;
-    case base::Value::TYPE_INTEGER:
-      return schema::kInteger;
-    case base::Value::TYPE_DOUBLE: {
-      double double_value = 0;
-      value->GetAsDouble(&double_value);
-      if (std::abs(double_value) <= std::pow(2.0, DBL_MANT_DIG) &&
-          double_value == floor(double_value)) {
-        return schema::kInteger;
-      } else {
-        return schema::kNumber;
-      }
-    }
-    case base::Value::TYPE_STRING:
-      return schema::kString;
-    case base::Value::TYPE_DICTIONARY:
-      return schema::kObject;
-    case base::Value::TYPE_LIST:
-      return schema::kArray;
-    default:
-      NOTREACHED() << "Unexpected value type: " << value->GetType();
-      return std::string();
-  }
-}
-
-// static
-std::string JSONSchemaValidator::FormatErrorMessage(const std::string& format,
-                                                    const std::string& s1) {
-  std::string ret_val = format;
-  ReplaceFirstSubstringAfterOffset(&ret_val, 0, "*", s1);
-  return ret_val;
-}
-
-// static
-std::string JSONSchemaValidator::FormatErrorMessage(const std::string& format,
-                                                    const std::string& s1,
-                                                    const std::string& s2) {
-  std::string ret_val = format;
-  ReplaceFirstSubstringAfterOffset(&ret_val, 0, "*", s1);
-  ReplaceFirstSubstringAfterOffset(&ret_val, 0, "*", s2);
-  return ret_val;
-}
-
-// static
-scoped_ptr<base::DictionaryValue> JSONSchemaValidator::IsValidSchema(
-    const std::string& schema,
-    std::string* error) {
-  base::JSONParserOptions options = base::JSON_PARSE_RFC;
-  scoped_ptr<base::Value> json(
-      base::JSONReader::ReadAndReturnError(schema, options, NULL, error));
-  if (!json)
-    return scoped_ptr<base::DictionaryValue>();
-  base::DictionaryValue* dict = NULL;
-  if (!json->GetAsDictionary(&dict)) {
-    *error = "Schema must be a JSON object";
-    return scoped_ptr<base::DictionaryValue>();
-  }
-  if (!::IsValidSchema(dict, error))
-    return scoped_ptr<base::DictionaryValue>();
-  ignore_result(json.release());
-  return make_scoped_ptr(dict);
-}
-
-JSONSchemaValidator::JSONSchemaValidator(base::DictionaryValue* schema)
-    : schema_root_(schema), default_allow_additional_properties_(false) {
-}
-
-JSONSchemaValidator::JSONSchemaValidator(base::DictionaryValue* schema,
-                                         base::ListValue* types)
-    : schema_root_(schema), default_allow_additional_properties_(false) {
-  if (!types)
-    return;
-
-  for (size_t i = 0; i < types->GetSize(); ++i) {
-    base::DictionaryValue* type = NULL;
-    CHECK(types->GetDictionary(i, &type));
-
-    std::string id;
-    CHECK(type->GetString(schema::kId, &id));
-
-    CHECK(types_.find(id) == types_.end());
-    types_[id] = type;
-  }
-}
-
-JSONSchemaValidator::~JSONSchemaValidator() {}
-
-bool JSONSchemaValidator::Validate(const base::Value* instance) {
-  errors_.clear();
-  Validate(instance, schema_root_, std::string());
-  return errors_.empty();
-}
-
-void JSONSchemaValidator::Validate(const base::Value* instance,
-                                   const base::DictionaryValue* schema,
-                                   const std::string& path) {
-  // If this schema defines itself as reference type, save it in this.types.
-  std::string id;
-  if (schema->GetString(schema::kId, &id)) {
-    TypeMap::iterator iter = types_.find(id);
-    if (iter == types_.end())
-      types_[id] = schema;
-    else
-      DCHECK(iter->second == schema);
-  }
-
-  // If the schema has a $ref property, the instance must validate against
-  // that schema. It must be present in types_ to be referenced.
-  std::string ref;
-  if (schema->GetString(schema::kRef, &ref)) {
-    TypeMap::iterator type = types_.find(ref);
-    if (type == types_.end()) {
-      errors_.push_back(
-          Error(path, FormatErrorMessage(kUnknownTypeReference, ref)));
-    } else {
-      Validate(instance, type->second, path);
-    }
-    return;
-  }
-
-  // If the schema has a choices property, the instance must validate against at
-  // least one of the items in that array.
-  const base::ListValue* choices = NULL;
-  if (schema->GetList(schema::kChoices, &choices)) {
-    ValidateChoices(instance, choices, path);
-    return;
-  }
-
-  // If the schema has an enum property, the instance must be one of those
-  // values.
-  const base::ListValue* enumeration = NULL;
-  if (schema->GetList(schema::kEnum, &enumeration)) {
-    ValidateEnum(instance, enumeration, path);
-    return;
-  }
-
-  std::string type;
-  schema->GetString(schema::kType, &type);
-  CHECK(!type.empty());
-  if (type != schema::kAny) {
-    if (!ValidateType(instance, type, path))
-      return;
-
-    // These casts are safe because of checks in ValidateType().
-    if (type == schema::kObject) {
-      ValidateObject(static_cast<const base::DictionaryValue*>(instance),
-                     schema,
-                     path);
-    } else if (type == schema::kArray) {
-      ValidateArray(static_cast<const base::ListValue*>(instance),
-                    schema, path);
-    } else if (type == schema::kString) {
-      // Intentionally NOT downcasting to StringValue*. TYPE_STRING only implies
-      // GetAsString() can safely be carried out, not that it's a StringValue.
-      ValidateString(instance, schema, path);
-    } else if (type == schema::kNumber || type == schema::kInteger) {
-      ValidateNumber(instance, schema, path);
-    } else if (type != schema::kBoolean && type != schema::kNull) {
-      NOTREACHED() << "Unexpected type: " << type;
-    }
-  }
-}
-
-void JSONSchemaValidator::ValidateChoices(const base::Value* instance,
-                                          const base::ListValue* choices,
-                                          const std::string& path) {
-  size_t original_num_errors = errors_.size();
-
-  for (size_t i = 0; i < choices->GetSize(); ++i) {
-    const base::DictionaryValue* choice = NULL;
-    CHECK(choices->GetDictionary(i, &choice));
-
-    Validate(instance, choice, path);
-    if (errors_.size() == original_num_errors)
-      return;
-
-    // We discard the error from each choice. We only want to know if any of the
-    // validations succeeded.
-    errors_.resize(original_num_errors);
-  }
-
-  // Now add a generic error that no choices matched.
-  errors_.push_back(Error(path, kInvalidChoice));
-  return;
-}
-
-void JSONSchemaValidator::ValidateEnum(const base::Value* instance,
-                                       const base::ListValue* choices,
-                                       const std::string& path) {
-  for (size_t i = 0; i < choices->GetSize(); ++i) {
-    const base::Value* choice = NULL;
-    CHECK(choices->Get(i, &choice));
-    switch (choice->GetType()) {
-      case base::Value::TYPE_NULL:
-      case base::Value::TYPE_BOOLEAN:
-      case base::Value::TYPE_STRING:
-        if (instance->Equals(choice))
-          return;
-        break;
-
-      case base::Value::TYPE_INTEGER:
-      case base::Value::TYPE_DOUBLE:
-        if (instance->IsType(base::Value::TYPE_INTEGER) ||
-            instance->IsType(base::Value::TYPE_DOUBLE)) {
-          if (GetNumberValue(choice) == GetNumberValue(instance))
-            return;
-        }
-        break;
-
-      default:
-       NOTREACHED() << "Unexpected type in enum: " << choice->GetType();
-    }
-  }
-
-  errors_.push_back(Error(path, kInvalidEnum));
-}
-
-void JSONSchemaValidator::ValidateObject(const base::DictionaryValue* instance,
-                                         const base::DictionaryValue* schema,
-                                         const std::string& path) {
-  const base::DictionaryValue* properties = NULL;
-  schema->GetDictionary(schema::kProperties, &properties);
-  if (properties) {
-    for (base::DictionaryValue::Iterator it(*properties); !it.IsAtEnd();
-         it.Advance()) {
-      std::string prop_path = path.empty() ? it.key() : (path + "." + it.key());
-      const base::DictionaryValue* prop_schema = NULL;
-      CHECK(it.value().GetAsDictionary(&prop_schema));
-
-      const base::Value* prop_value = NULL;
-      if (instance->Get(it.key(), &prop_value)) {
-        Validate(prop_value, prop_schema, prop_path);
-      } else {
-        // Properties are required unless there is an optional field set to
-        // 'true'.
-        bool is_optional = false;
-        prop_schema->GetBoolean(schema::kOptional, &is_optional);
-        if (!is_optional) {
-          errors_.push_back(Error(prop_path, kObjectPropertyIsRequired));
-        }
-      }
-    }
-  }
-
-  const base::DictionaryValue* additional_properties_schema = NULL;
-  if (SchemaAllowsAnyAdditionalItems(schema, &additional_properties_schema))
-    return;
-
-  // Validate additional properties.
-  for (base::DictionaryValue::Iterator it(*instance); !it.IsAtEnd();
-       it.Advance()) {
-    if (properties && properties->HasKey(it.key()))
-      continue;
-
-    std::string prop_path = path.empty() ? it.key() : path + "." + it.key();
-    if (!additional_properties_schema) {
-      errors_.push_back(Error(prop_path, kUnexpectedProperty));
-    } else {
-      Validate(&it.value(), additional_properties_schema, prop_path);
-    }
-  }
-}
-
-void JSONSchemaValidator::ValidateArray(const base::ListValue* instance,
-                                        const base::DictionaryValue* schema,
-                                        const std::string& path) {
-  const base::DictionaryValue* single_type = NULL;
-  size_t instance_size = instance->GetSize();
-  if (schema->GetDictionary(schema::kItems, &single_type)) {
-    int min_items = 0;
-    if (schema->GetInteger(schema::kMinItems, &min_items)) {
-      CHECK(min_items >= 0);
-      if (instance_size < static_cast<size_t>(min_items)) {
-        errors_.push_back(Error(path, FormatErrorMessage(
-            kArrayMinItems, base::IntToString(min_items))));
-      }
-    }
-
-    int max_items = 0;
-    if (schema->GetInteger(schema::kMaxItems, &max_items)) {
-      CHECK(max_items >= 0);
-      if (instance_size > static_cast<size_t>(max_items)) {
-        errors_.push_back(Error(path, FormatErrorMessage(
-            kArrayMaxItems, base::IntToString(max_items))));
-      }
-    }
-
-    // If the items property is a single schema, each item in the array must
-    // validate against that schema.
-    for (size_t i = 0; i < instance_size; ++i) {
-      const base::Value* item = NULL;
-      CHECK(instance->Get(i, &item));
-      std::string i_str = base::UintToString(i);
-      std::string item_path = path.empty() ? i_str : (path + "." + i_str);
-      Validate(item, single_type, item_path);
-    }
-
-    return;
-  }
-
-  // Otherwise, the list must be a tuple type, where each item in the list has a
-  // particular schema.
-  ValidateTuple(instance, schema, path);
-}
-
-void JSONSchemaValidator::ValidateTuple(const base::ListValue* instance,
-                                        const base::DictionaryValue* schema,
-                                        const std::string& path) {
-  const base::ListValue* tuple_type = NULL;
-  schema->GetList(schema::kItems, &tuple_type);
-  size_t tuple_size = tuple_type ? tuple_type->GetSize() : 0;
-  if (tuple_type) {
-    for (size_t i = 0; i < tuple_size; ++i) {
-      std::string i_str = base::UintToString(i);
-      std::string item_path = path.empty() ? i_str : (path + "." + i_str);
-      const base::DictionaryValue* item_schema = NULL;
-      CHECK(tuple_type->GetDictionary(i, &item_schema));
-      const base::Value* item_value = NULL;
-      instance->Get(i, &item_value);
-      if (item_value && item_value->GetType() != base::Value::TYPE_NULL) {
-        Validate(item_value, item_schema, item_path);
-      } else {
-        bool is_optional = false;
-        item_schema->GetBoolean(schema::kOptional, &is_optional);
-        if (!is_optional) {
-          errors_.push_back(Error(item_path, kArrayItemRequired));
-          return;
-        }
-      }
-    }
-  }
-
-  const base::DictionaryValue* additional_properties_schema = NULL;
-  if (SchemaAllowsAnyAdditionalItems(schema, &additional_properties_schema))
-    return;
-
-  size_t instance_size = instance->GetSize();
-  if (additional_properties_schema) {
-    // Any additional properties must validate against the additionalProperties
-    // schema.
-    for (size_t i = tuple_size; i < instance_size; ++i) {
-      std::string i_str = base::UintToString(i);
-      std::string item_path = path.empty() ? i_str : (path + "." + i_str);
-      const base::Value* item_value = NULL;
-      CHECK(instance->Get(i, &item_value));
-      Validate(item_value, additional_properties_schema, item_path);
-    }
-  } else if (instance_size > tuple_size) {
-    errors_.push_back(Error(path, FormatErrorMessage(
-        kArrayMaxItems, base::UintToString(tuple_size))));
-  }
-}
-
-void JSONSchemaValidator::ValidateString(const base::Value* instance,
-                                         const base::DictionaryValue* schema,
-                                         const std::string& path) {
-  std::string value;
-  CHECK(instance->GetAsString(&value));
-
-  int min_length = 0;
-  if (schema->GetInteger(schema::kMinLength, &min_length)) {
-    CHECK(min_length >= 0);
-    if (value.size() < static_cast<size_t>(min_length)) {
-      errors_.push_back(Error(path, FormatErrorMessage(
-          kStringMinLength, base::IntToString(min_length))));
-    }
-  }
-
-  int max_length = 0;
-  if (schema->GetInteger(schema::kMaxLength, &max_length)) {
-    CHECK(max_length >= 0);
-    if (value.size() > static_cast<size_t>(max_length)) {
-      errors_.push_back(Error(path, FormatErrorMessage(
-          kStringMaxLength, base::IntToString(max_length))));
-    }
-  }
-
-  CHECK(!schema->HasKey(schema::kPattern)) << "Pattern is not supported.";
-}
-
-void JSONSchemaValidator::ValidateNumber(const base::Value* instance,
-                                         const base::DictionaryValue* schema,
-                                         const std::string& path) {
-  double value = GetNumberValue(instance);
-
-  // TODO(aa): It would be good to test that the double is not infinity or nan,
-  // but isnan and isinf aren't defined on Windows.
-
-  double minimum = 0;
-  if (schema->GetDouble(schema::kMinimum, &minimum)) {
-    if (value < minimum)
-      errors_.push_back(Error(path, FormatErrorMessage(
-          kNumberMinimum, base::DoubleToString(minimum))));
-  }
-
-  double maximum = 0;
-  if (schema->GetDouble(schema::kMaximum, &maximum)) {
-    if (value > maximum)
-      errors_.push_back(Error(path, FormatErrorMessage(
-          kNumberMaximum, base::DoubleToString(maximum))));
-  }
-}
-
-bool JSONSchemaValidator::ValidateType(const base::Value* instance,
-                                       const std::string& expected_type,
-                                       const std::string& path) {
-  std::string actual_type = GetJSONSchemaType(instance);
-  if (expected_type == actual_type ||
-      (expected_type == schema::kNumber && actual_type == schema::kInteger)) {
-    return true;
-  } else if (expected_type == schema::kInteger &&
-             actual_type == schema::kNumber) {
-    errors_.push_back(Error(path, kInvalidTypeIntegerNumber));
-    return false;
-  } else {
-    errors_.push_back(Error(path, FormatErrorMessage(
-        kInvalidType, expected_type, actual_type)));
-    return false;
-  }
-}
-
-bool JSONSchemaValidator::SchemaAllowsAnyAdditionalItems(
-    const base::DictionaryValue* schema,
-    const base::DictionaryValue** additional_properties_schema) {
-  // If the validator allows additional properties globally, and this schema
-  // doesn't override, then we can exit early.
-  schema->GetDictionary(schema::kAdditionalProperties,
-                        additional_properties_schema);
-
-  if (*additional_properties_schema) {
-    std::string additional_properties_type(schema::kAny);
-    CHECK((*additional_properties_schema)->GetString(
-        schema::kType, &additional_properties_type));
-    return additional_properties_type == schema::kAny;
-  } else {
-    return default_allow_additional_properties_;
-  }
-}