[WIP][DO NOT LAND] Componentize spellcheck

chrome/browser/spellchecker/misspelling.cc

-// Copyright (c) 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.
-//
-// The |Misspelling| object stores the misspelling, a spellcheck suggestion for
-// it, and user's action on it. The misspelling is stored as |context|,
-// |location|, and |length| instead of only misspelled text, because the
-// spellcheck algorithm uses the context.
-
-#include "chrome/browser/spellchecker/misspelling.h"
-
-#include "base/strings/string_number_conversions.h"
-#include "base/values.h"
-
-namespace {
-
-// Builds a value from a list of spellcheck suggestions.
-std::unique_ptr<base::Value> BuildSuggestionsValue(
-    const std::vector<base::string16>& list) {
-  std::unique_ptr<base::ListValue> result(new base::ListValue);
-  result->AppendStrings(list);
-  return std::move(result);
-}
-
-// Builds a value from a spellcheck action.
-std::unique_ptr<base::Value> BuildUserActionValue(
-    const SpellcheckAction& action) {
-  std::unique_ptr<base::ListValue> result(new base::ListValue);
-  result->Append(action.Serialize());
-  return std::move(result);
-}
-
-}  // namespace
-
-Misspelling::Misspelling()
-    : location(0), length(0), hash(0), timestamp(base::Time::Now()) {}
-
-Misspelling::Misspelling(const base::string16& context,
-                         size_t location,
-                         size_t length,
-                         const std::vector<base::string16>& suggestions,
-                         uint32_t hash)
-    : context(context),
-      location(location),
-      length(length),
-      suggestions(suggestions),
-      hash(hash),
-      timestamp(base::Time::Now()) {}
-
-Misspelling::Misspelling(const Misspelling& other) = default;
-
-Misspelling::~Misspelling() {}
-
-std::unique_ptr<base::DictionaryValue> SerializeMisspelling(
-    const Misspelling& misspelling) {
-  std::unique_ptr<base::DictionaryValue> result(new base::DictionaryValue);
-  result->SetString(
-      "timestamp",
-      base::Int64ToString(static_cast<long>(misspelling.timestamp.ToJsTime())));
-  result->SetInteger("misspelledLength", misspelling.length);
-  result->SetInteger("misspelledStart", misspelling.location);
-  result->SetString("originalText", misspelling.context);
-  result->SetString("suggestionId", base::UintToString(misspelling.hash));
-  result->Set("suggestions",
-              BuildSuggestionsValue(misspelling.suggestions).release());
-  result->Set("userActions",
-              BuildUserActionValue(misspelling.action).release());
-  return result;
-}
-
-base::string16 GetMisspelledString(const Misspelling& misspelling) {
-  // Feedback sender does not create Misspelling objects for spellcheck results
-  // that are out-of-bounds of checked text length.
-  if (misspelling.location > misspelling.context.length())
-    return base::string16();
-  return misspelling.context.substr(misspelling.location, misspelling.length);
-}
-
-size_t ApproximateSerializedSize(const Misspelling& misspelling) {
-  // Estimated by eyeballing JSON overhead.
-  const size_t kNumberOfOverheadBytes = 180;
-  size_t result = misspelling.context.length() + kNumberOfOverheadBytes;
-  for (const base::string16& suggestion : misspelling.suggestions)
-    result += suggestion.size();
-  return result;
-}