Implement the 2016Q2 Translate UI designe spec out in

components/translate/core/browser/translate_prefs.h

Index: components/translate/core/browser/translate_prefs.h
diff --git a/components/translate/core/browser/translate_prefs.h b/components/translate/core/browser/translate_prefs.h
index d994bb0a459cbba9906ff08b9ce6bfd96a152494..65c3befcf10553364b948acd4048a986368b779a 100644
--- a/components/translate/core/browser/translate_prefs.h
+++ b/components/translate/core/browser/translate_prefs.h
@@ -10,6 +10,7 @@
 #include <string>
 #include <vector>
 
+#include "base/feature_list.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/time/time.h"
@@ -31,6 +32,9 @@ class PrefRegistrySyncable;
 
 namespace translate {
 
+// Feature flag for "Translate UI 2016 Q2" project.
+extern const base::Feature kTranslateUI2016Q2;

[msw, 2016/05/03 22:33:35]

Does this belong in chrome/common/chrome_features.[h|cc]?

[ftang, 2016/05/03 23:55:42]

this is not really a feature flag, but a short term experimental flag inside the
translate feature. I don't think it is a good idea to put that into the
chrome/common/chrome_features.[h|cc]

[msw, 2016/05/04 00:19:20]

Acknowledged.

+
 class TranslateAcceptLanguages;
 
 // Allows updating denial times for a specific language while maintaining the
@@ -70,6 +74,7 @@ class TranslatePrefs {
   static const char kPrefTranslateSiteBlacklist[];
   static const char kPrefTranslateWhitelists[];
   static const char kPrefTranslateDeniedCount[];
+  static const char kPrefTranslateIgnoredCount[];
   static const char kPrefTranslateAcceptedCount[];
   static const char kPrefTranslateBlockedLanguages[];
   static const char kPrefTranslateLastDeniedTimeForLanguage[];
@@ -124,6 +129,12 @@ class TranslatePrefs {
   void IncrementTranslationDeniedCount(const std::string& language);
   void ResetTranslationDeniedCount(const std::string& language);
 
+  // These methods are used to track how many times the user has ignored the
+  // translation bubble for a specific language.
+  int GetTranslationIgnoredCount(const std::string& language) const;
+  void IncrementTranslationIgnoredCount(const std::string& language);
+  void ResetTranslationIgnoredCount(const std::string& language);
+
   // These methods are used to track how many times the user has accepted the
   // translation for a specific language. (So we can present a UI to white-list
   // that language if the user keeps accepting translations).