Remove now-unnecessary .obj() in Java method calls.

chrome/browser/android/webapk/webapk_installer.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/android/webapk/webapk_installer.h"
 
 #include "base/android/build_info.h"
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/android/path_utils.h"
@@ skipping 123 matching lines @@
 
 void WebApkInstaller::SetTimeoutMs(int timeout_ms) {
   webapk_download_url_timeout_ms_ = timeout_ms;
   download_timeout_ms_ = timeout_ms;
 }
 
 bool WebApkInstaller::StartDownloadedWebApkInstall(
     JNIEnv* env,
     const base::android::ScopedJavaLocalRef<jstring>& java_file_path,
     const base::android::ScopedJavaLocalRef<jstring>& java_package_name) {
-  return Java_WebApkInstaller_installAsyncFromNative(env, java_file_path.obj(),
-                                                     java_package_name.obj());
+  return Java_WebApkInstaller_installAsyncFromNative(env, java_file_path,
+                                                     java_package_name);
 }
 
 void WebApkInstaller::OnURLFetchComplete(const net::URLFetcher* source) {
   timer_.Stop();
 
   if (!source->GetStatus().is_success() ||
       source->GetResponseCode() != net::HTTP_OK) {
     OnFailure();
     return;
   }
@@ skipping 138 matching lines @@
 
 void WebApkInstaller::OnSuccess() {
   finish_callback_.Run(true);
   delete this;
 }
 
 void WebApkInstaller::OnFailure() {
   finish_callback_.Run(false);
   delete this;
 }