[Autofill] Sort profiles and credit cards by frecency in PaymentRequest.

chrome/browser/autofill/android/personal_data_manager_android.h

Index: chrome/browser/autofill/android/personal_data_manager_android.h
diff --git a/chrome/browser/autofill/android/personal_data_manager_android.h b/chrome/browser/autofill/android/personal_data_manager_android.h
index 2d1208822ed6cb72982a480846b4c08b91441888..ee2ab50495e642c053cdda818c3dc13772c69bc5 100644
--- a/chrome/browser/autofill/android/personal_data_manager_android.h
+++ b/chrome/browser/autofill/android/personal_data_manager_android.h
@@ -117,6 +117,23 @@ class PersonalDataManagerAndroid : public PersonalDataManagerObserver {
   // Registers the JNI bindings for this class.
   static bool Register(JNIEnv* env);
 
+  // Sets the use count and use date of the profile associated to the |jguid|.
+  void SetProfileUseStats(

[please use gerrit instead, 2016/05/16 15:57:46]

s/SetProfileUseStats/SetProfileUseStatsForTest

[sebsg, 2016/05/19 17:52:04]

Done.

+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& unused_obj,
+      const base::android::JavaParamRef<jstring>& jguid,
+      jint count,
+      jint date);
+
+  // Sets the use count and use date of the credit card associated to the
+  // |jguid|.
+  void SetCreditCardUseStats(

[please use gerrit instead, 2016/05/16 15:57:46]

s/SetCreditCardUseStats/SetCreditCardUseStatsForTest

[sebsg, 2016/05/19 17:52:03]

Done.

+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& unused_obj,
+      const base::android::JavaParamRef<jstring>& jguid,
+      jint count,
+      jint date);
+
  private:
   ~PersonalDataManagerAndroid() override;