Notify Java O2TS when revoking all tokens.

chrome/browser/signin/android_profile_oauth2_token_service.cc

Index: chrome/browser/signin/android_profile_oauth2_token_service.cc
diff --git a/chrome/browser/signin/android_profile_oauth2_token_service.cc b/chrome/browser/signin/android_profile_oauth2_token_service.cc
index 2d0da70df77f48ab229f5687e90cce93becefbea..b6a3d1e6b65d8a94a89f0ecf9c08e03f5751e7d0 100644
--- a/chrome/browser/signin/android_profile_oauth2_token_service.cc
+++ b/chrome/browser/signin/android_profile_oauth2_token_service.cc
@@ -371,6 +371,14 @@ void AndroidProfileOAuth2TokenService::RevokeAllCredentials() {
        it != accounts.end(); it++) {
     FireRefreshTokenRevoked(*it);
   }
+
+  // Clear everything on the Java side as well.
+  std::vector<std::string> empty;
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobjectArray> java_accounts(
+      base::android::ToJavaArrayOfStrings(env, empty));
+  Java_OAuth2TokenService_saveStoredAccounts(
+      env, base::android::GetApplicationContext(), java_accounts.obj());
 }
 
 // Called from Java when fetching of an OAuth2 token is finished. The