Remove unused Interests code.

chrome/browser/android/chrome_jni_registrar.cc

Index: chrome/browser/android/chrome_jni_registrar.cc
diff --git a/chrome/browser/android/chrome_jni_registrar.cc b/chrome/browser/android/chrome_jni_registrar.cc
index 1182f24fbf5c4e165906a1673cc7cfe2a7bce039..4bbf922ca0f2243819dacf25b6edde7e2b3a3726 100644
--- a/chrome/browser/android/chrome_jni_registrar.cc
+++ b/chrome/browser/android/chrome_jni_registrar.cc
@@ -101,7 +101,6 @@
 #include "chrome/browser/dom_distiller/dom_distiller_service_factory_android.h"
 #include "chrome/browser/dom_distiller/tab_utils_android.h"
 #include "chrome/browser/history/android/sqlite_cursor.h"
-#include "chrome/browser/interests/android/interests_service.h"
 #include "chrome/browser/invalidation/invalidation_service_factory_android.h"
 #include "chrome/browser/lifetime/application_lifetime_android.h"
 #include "chrome/browser/media/android/cdm/media_drm_credential_manager.h"
@@ -291,7 +290,6 @@ static base::android::RegistrationMethod kChromeRegisteredMethods[] = {
     {"GroupedPermissionInfoBar", GroupedPermissionInfoBar::Register},
     {"HistoryReportJniBridge", history_report::RegisterHistoryReportJniBridge},
     {"InfoBarContainer", RegisterInfoBarContainer},
-    {"InterestsService", InterestsService::Register},
     {"InvalidationServiceFactory",
      invalidation::InvalidationServiceFactoryAndroid::Register},
     {"SimpleConfirmInfoBarBuilder", RegisterSimpleConfirmInfoBarBuilder},