Move language detection to a component

chrome/browser/translate/translate_manager.cc

 // Copyright (c) 2012 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/translate/translate_manager.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/memory/singleton.h"
 #include "base/metrics/histogram.h"
@@ skipping 15 matching lines @@
 #include "chrome/browser/translate/translate_infobar_delegate.h"
 #include "chrome/browser/translate/translate_language_list.h"
 #include "chrome/browser/translate/translate_prefs.h"
 #include "chrome/browser/translate/translate_script.h"
 #include "chrome/browser/translate/translate_tab_helper.h"
 #include "chrome/browser/translate/translate_url_util.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
-#include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/common/translate/language_detection_details.h"
 #include "chrome/common/url_constants.h"
+#include "components/translate/common/translate_constants.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/navigation_details.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
@@ skipping 407 matching lines @@
     NOTREACHED();
     return;
   }
 
   // Translation can be kicked by context menu against unsupported languages.
   // Unsupported language strings should be replaced with
   // kUnknownLanguageCode in order to send a translation request with enabling
   // server side auto language detection.
   std::string source_lang(original_source_lang);
   if (!IsSupportedLanguage(source_lang))
-    source_lang = std::string(chrome::kUnknownLanguageCode);
+    source_lang = std::string(translate::kUnknownLanguageCode);
 
   Profile* profile =
       Profile::FromBrowserContext(web_contents->GetBrowserContext());
   TranslateInfoBarDelegate::Create(
       true, InfoBarService::FromWebContents(web_contents),
       TranslateInfoBarDelegate::TRANSLATING, source_lang, target_lang,
       TranslateErrors::NONE, profile->GetPrefs(), ShortcutConfig());
 
   DCHECK(script_.get() != NULL);
 
@@ skipping 93 matching lines @@
 
   translate_tab_helper->language_state().set_translation_pending(true);
   web_contents->GetRenderViewHost()->Send(new ChromeViewMsg_TranslatePage(
       web_contents->GetRenderViewHost()->GetRoutingID(), entry->GetPageID(),
       translate_script, source_lang, target_lang));
 }
 
 void TranslateManager::PageTranslated(WebContents* web_contents,
                                       PageTranslatedDetails* details) {
   if ((details->error_type == TranslateErrors::NONE) &&
-      details->source_language != chrome::kUnknownLanguageCode &&
+      details->source_language != translate::kUnknownLanguageCode &&
       !IsSupportedLanguage(details->source_language)) {
     details->error_type = TranslateErrors::UNSUPPORTED_LANGUAGE;
   }
 
   PrefService* prefs = Profile::FromBrowserContext(
       web_contents->GetBrowserContext())->GetPrefs();
   TranslateInfoBarDelegate::Create(
       true, InfoBarService::FromWebContents(web_contents),
       (details->error_type == TranslateErrors::NONE) ?
           TranslateInfoBarDelegate::AFTER_TRANSLATE :
@@ skipping 110 matching lines @@
   // so we are more aggressive about showing the shortcut to never translate.
   #if defined(OS_ANDROID)
   config.never_translate_min_count = 1;
   #else
   config.never_translate_min_count = 3;
   #endif  // defined(OS_ANDROID)
 
   config.always_translate_min_count = 3;
   return config;
 }