Initialize CLD score/language arrays prior to use, for pedantic safety.

components/translate/core/language_detection/language_detection_util.cc

 // Copyright 2014 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 "components/translate/core/language_detection/language_detection_util.h"
 
 #include <stddef.h>
 
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 68 matching lines @@
   const bool is_plain_text = true;
 
   // Language or CLD2::Language
   int cld_language = 0;
   bool is_valid_language = false;
 
   const std::string utf8_text(base::UTF16ToUTF8(text));
   const int num_utf8_bytes = static_cast<int>(utf8_text.size());
   const char* raw_utf8_bytes = utf8_text.c_str();
 
-  CLD2::Language language3[3];
-  int percent3[3];
+  CLD2::Language language3[3] = {
+    CLD2::UNKNOWN_LANGUAGE, CLD2::UNKNOWN_LANGUAGE, CLD2::UNKNOWN_LANGUAGE};
+  int percent3[3] = {0, 0, 0};
   int flags = 0;   // No flags, see compact_lang_det.h for details.
   int text_bytes;  // Amount of non-tag/letters-only text (assumed 0).
-  double normalized_score3[3];
+  double normalized_score3[3] = {0, 0, 0};

[Takashi Toyoshima, 2016/05/11 06:08:50]

0.0 is better for double?

 
   const char* tld_hint = "";
   int encoding_hint = CLD2::UNKNOWN_ENCODING;
   CLD2::Language language_hint = CLD2::GetLanguageFromName(html_lang.c_str());
   CLD2::CLDHints cldhints = {code.c_str(), tld_hint, encoding_hint,
                              language_hint};
 
   CLD2::ExtDetectLanguageSummaryCheckUTF8(
       raw_utf8_bytes, num_utf8_bytes, is_plain_text, &cldhints, flags,
       language3, percent3, normalized_score3,
@@ skipping 262 matching lines @@
   // distinguish from English, and the language is one of well-known languages
   // which often provide "en-*" meta information mistakenly.
   for (size_t i = 0; i < arraysize(kWellKnownCodesOnWrongConfiguration); ++i) {
     if (cld_language == kWellKnownCodesOnWrongConfiguration[i])
       return true;
   }
   return false;
 }
 
 }  // namespace translate