Added the 'Translation Logs' tab to chrome://translate-internals/

chrome/browser/ui/webui/translate_internals/translate_internals_handler.cc

 // 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.
 
 #include "chrome/browser/ui/webui/translate_internals/translate_internals_handler.h"
 
 #include <map>
-#include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/prefs/pref_service.h"
 #include "base/values.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/translate/translate_prefs.h"
+#include "chrome/common/language_detection_details.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_ui.h"
 
+TranslateInternalsHandler::TranslateInternalsHandler() {
+  TranslateManager::GetInstance()->AddObserver(this);

[Evan Stade, 2013/05/18 23:42:58]

nit: I think it's preferable to use ScopedObserver

+}
+
+TranslateInternalsHandler::~TranslateInternalsHandler() {
+  TranslateManager::GetInstance()->RemoveObserver(this);
+}
+
 void TranslateInternalsHandler::RegisterMessages() {
   web_ui()->RegisterMessageCallback("removePrefItem", base::Bind(
       &TranslateInternalsHandler::OnRemovePrefItem, base::Unretained(this)));
   web_ui()->RegisterMessageCallback("requestInfo", base::Bind(
       &TranslateInternalsHandler::OnRequestInfo, base::Unretained(this)));
 }
 
+void TranslateInternalsHandler::OnLanguageDetection(
+    const LanguageDetectionDetails& details) {
+  base::DictionaryValue dict;
+  dict.Set("time",
+           new base::FundamentalValue(details.time.ToJsTime()));
+  dict.Set("url",
+           new base::StringValue(details.url.spec()));
+  dict.Set("content_language",
+           new base::StringValue(details.content_language));
+  dict.Set("cld_language",
+           new base::StringValue(details.cld_language));
+  dict.Set("is_cld_reliable",
+           new base::FundamentalValue(details.is_cld_reliable));
+  dict.Set("language", new base::StringValue(details.adopted_language));
+  SendMessageToJs("languageDetectionInfoAdded", dict);
+}
+
 void TranslateInternalsHandler::OnRemovePrefItem(const base::ListValue* args) {
   content::WebContents* web_contents = web_ui()->GetWebContents();
   Profile* profile =
       Profile::FromBrowserContext(web_contents->GetBrowserContext());
   PrefService* prefs = profile->GetOriginalProfile()->GetPrefs();
   TranslatePrefs translate_prefs(prefs);
 
   std::string pref_name;
   if (!args->GetString(0, &pref_name))
     return;
@@ skipping 53 matching lines @@
 
   for (size_t i = 0; i < arraysize(keys); ++i) {
     const char* key = keys[i];
     const PrefService::Preference* pref = prefs->FindPreference(key);
     if (pref)
       dict.Set(key, pref->GetValue()->DeepCopy());
   }
 
   SendMessageToJs("prefsUpdated", dict);
 }