Revert "Remove spellcheck feedback."

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. The caller owns the
+// result.
+base::Value* BuildSuggestionsValue(const std::vector<base::string16>& list) {
+  base::ListValue* result = new base::ListValue;
+  result->AppendStrings(list);
+  return result;
+}
+
+// Builds a value from a spellcheck action. The caller owns the result.
+base::Value* BuildUserActionValue(const SpellcheckAction& action) {
+  base::ListValue* result = new base::ListValue;
+  result->Append(action.Serialize());
+  return 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 hash)
+    : context(context),
+      location(location),
+      length(length),
+      suggestions(suggestions),
+      hash(hash),
+      timestamp(base::Time::Now()) {
+}
+
+Misspelling::~Misspelling() {
+}
+
+base::DictionaryValue* Misspelling::Serialize() const {
+  base::DictionaryValue* result = new base::DictionaryValue;
+  result->SetString(
+      "timestamp",
+      base::Int64ToString(static_cast<long>(timestamp.ToJsTime())));
+  result->SetInteger("misspelledLength", length);
+  result->SetInteger("misspelledStart", location);
+  result->SetString("originalText", context);
+  result->SetString("suggestionId", base::UintToString(hash));
+  result->Set("suggestions", BuildSuggestionsValue(suggestions));
+  result->Set("userActions", BuildUserActionValue(action));
+  return result;
+}
+
+base::string16 Misspelling::GetMisspelledString() const {
+  // Feedback sender does not create Misspelling objects for spellcheck results
+  // that are out-of-bounds of checked text length.
+  if (location > context.length())
+    return base::string16();
+  return context.substr(location, length);
+}