Move language detection to a component

components/translate/common/translate_constants.cc

Index: components/translate/common/translate_constants.cc
diff --git a/content/browser/power_save_blocker_android.h b/components/translate/common/translate_constants.cc
similarity index 51%
copy from content/browser/power_save_blocker_android.h
copy to components/translate/common/translate_constants.cc
index 1df7d697b53df6b968363eed4551f2b3e10faef3..a51bb9349801d031f545cdbc037a8c8c34a98ac4 100644
--- a/content/browser/power_save_blocker_android.h
+++ b/components/translate/common/translate_constants.cc
@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include <jni.h>
+#include "components/translate/common/translate_constants.h"
 
-namespace content {
+namespace translate {
 
-bool RegisterPowerSaveBlocker(JNIEnv* env);
+const char* const kUnknownLanguageCode = "und";
 
-}  // namespace content
+}  // namespace translate