Move language detection to a component

components/translate/common/translate_metrics.cc

Index: components/translate/common/translate_metrics.cc
diff --git a/chrome/common/translate/translate_common_metrics.cc b/components/translate/common/translate_metrics.cc
similarity index 70%
rename from chrome/common/translate/translate_common_metrics.cc
rename to components/translate/common/translate_metrics.cc
index 977bb5ccdccc73457714e1ab0016cb34b0b14535..b09508446456fad735069f74d9548a62b141625e 100644
--- a/chrome/common/translate/translate_common_metrics.cc
+++ b/components/translate/common/translate_metrics.cc
@@ -2,11 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/common/translate/translate_common_metrics.h"
+#include "components/translate/common/translate_metrics.h"
 
 #include "base/basictypes.h"
 #include "base/metrics/histogram.h"
 
+namespace translate {
+
 namespace {
 
 // Constant string values to indicate UMA names. All entries should have
@@ -26,63 +28,49 @@ const char kSchemeHttp[] = "http";
 const char kSchemeHttps[] = "https";
 
 struct MetricsEntry {
-  TranslateCommonMetrics::MetricsNameIndex index;
+  MetricsNameIndex index;
   const char* const name;
 };
 
 // This entry table should be updated when new UMA items are added.
 const MetricsEntry kMetricsEntries[] = {
-  { TranslateCommonMetrics::UMA_LANGUAGE_DETECTION,
-    kRenderer4LanguageDetection },
-  { TranslateCommonMetrics::UMA_CONTENT_LANGUAGE,
-    kTranslateContentLanguage },
-  { TranslateCommonMetrics::UMA_HTML_LANG,
-    kTranslateHtmlLang },
-  { TranslateCommonMetrics::UMA_LANGUAGE_VERIFICATION,
-    kTranslateLanguageVerification },
-  { TranslateCommonMetrics::UMA_TIME_TO_BE_READY,
-    kTranslateTimeToBeReady },
-  { TranslateCommonMetrics::UMA_TIME_TO_LOAD,
-    kTranslateTimeToLoad },
-  { TranslateCommonMetrics::UMA_TIME_TO_TRANSLATE,
-    kTranslateTimeToTranslate },
-  { TranslateCommonMetrics::UMA_USER_ACTION_DURATION,
-    kTranslateUserActionDuration },
-  { TranslateCommonMetrics::UMA_PAGE_SCHEME,
-    kTranslatePageScheme },
-  { TranslateCommonMetrics::UMA_SIMILAR_LANGUAGE_MATCH,
-    kTranslateSimilarLanguageMatch },
-};
-
-COMPILE_ASSERT(arraysize(kMetricsEntries) == TranslateCommonMetrics::UMA_MAX,
+    {UMA_LANGUAGE_DETECTION, kRenderer4LanguageDetection},
+    {UMA_CONTENT_LANGUAGE, kTranslateContentLanguage},
+    {UMA_HTML_LANG, kTranslateHtmlLang},
+    {UMA_LANGUAGE_VERIFICATION, kTranslateLanguageVerification},
+    {UMA_TIME_TO_BE_READY, kTranslateTimeToBeReady},
+    {UMA_TIME_TO_LOAD, kTranslateTimeToLoad},
+    {UMA_TIME_TO_TRANSLATE, kTranslateTimeToTranslate},
+    {UMA_USER_ACTION_DURATION, kTranslateUserActionDuration},
+    {UMA_PAGE_SCHEME, kTranslatePageScheme},
+    {UMA_SIMILAR_LANGUAGE_MATCH, kTranslateSimilarLanguageMatch}, };
+
+COMPILE_ASSERT(arraysize(kMetricsEntries) == UMA_MAX,
                arraysize_of_kMetricsEntries_should_be_UMA_MAX);
 
-TranslateCommonMetrics::LanguageCheckType GetLanguageCheckMetric(
-    const std::string& provided_code,
-    const std::string& revised_code) {
+LanguageCheckType GetLanguageCheckMetric(const std::string& provided_code,
+                                         const std::string& revised_code) {
   if (provided_code.empty())
-    return TranslateCommonMetrics::LANGUAGE_NOT_PROVIDED;
+    return LANGUAGE_NOT_PROVIDED;
   else if (provided_code == revised_code)
-    return TranslateCommonMetrics::LANGUAGE_VALID;
-  return TranslateCommonMetrics::LANGUAGE_INVALID;
+    return LANGUAGE_VALID;
+  return LANGUAGE_INVALID;
 }
 
 }  // namespace
 
-namespace TranslateCommonMetrics {
-
 void ReportContentLanguage(const std::string& provided_code,
                            const std::string& revised_code) {
   UMA_HISTOGRAM_ENUMERATION(kTranslateContentLanguage,
                             GetLanguageCheckMetric(provided_code, revised_code),
-                            TranslateCommonMetrics::LANGUAGE_MAX);
+                            LANGUAGE_MAX);
 }
 
 void ReportHtmlLang(const std::string& provided_code,
                     const std::string& revised_code) {
   UMA_HISTOGRAM_ENUMERATION(kTranslateHtmlLang,
                             GetLanguageCheckMetric(provided_code, revised_code),
-                            TranslateCommonMetrics::LANGUAGE_MAX);
+                            LANGUAGE_MAX);
 }
 
 void ReportLanguageVerification(LanguageVerificationType type) {
@@ -139,4 +127,4 @@ const char* GetMetricsName(MetricsNameIndex index) {
   return NULL;
 }
 
-} // namespace TranslateCommonMetrics
+}  // namespace translate