Remove Password Authentication code that is no longer used.

chrome/browser/android/password_authentication_manager.cc

-// Copyright 2014 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/password_authentication_manager.h"
-
-#include "chrome/browser/android/tab_android.h"
-#include "jni/PasswordAuthenticationManager_jni.h"
-
-namespace {
-
-class PasswordAuthenticationCallback {
- public:
-  explicit PasswordAuthenticationCallback(
-      const base::Closure& success_callback) {
-    success_callback_ = success_callback;
-  }
-
-  void OnResult(bool result) {
-    if (result)
-      success_callback_.Run();
-    delete this;
-  }
-
- private:
-  virtual ~PasswordAuthenticationCallback() {}
-
-  base::Closure success_callback_;
-};
-
-}  // namespace
-
-PasswordAuthenticationManager::PasswordAuthenticationManager() {
-}
-
-PasswordAuthenticationManager::~PasswordAuthenticationManager() {
-}
-
-bool PasswordAuthenticationManager::RegisterPasswordAuthenticationManager(
-    JNIEnv* env) {
-  return RegisterNativesImpl(env);
-}
-
-void PasswordAuthenticationManager::AuthenticatePasswordAutofill(
-    content::WebContents* web_contents,
-    const base::Closure& success_callback) {
-  TabAndroid* tab = TabAndroid::FromWebContents(web_contents);
-  if (!tab)
-    return;
-
-  JNIEnv* env = base::android::AttachCurrentThread();
-  PasswordAuthenticationCallback* auth_callback =
-      new PasswordAuthenticationCallback(success_callback);
-  Java_PasswordAuthenticationManager_requestAuthentication(
-      env,
-      tab->GetJavaObject().obj(),
-      Java_PasswordAuthenticationCallback_create(
-          env,
-          reinterpret_cast<intptr_t>(auth_callback)).obj());
-}
-
-// static
-void OnResult(JNIEnv* env,
-              jclass jcaller,
-              jlong callback_ptr,
-              jboolean authenticated) {
-  PasswordAuthenticationCallback* callback =
-      reinterpret_cast<PasswordAuthenticationCallback*>(callback_ptr);
-  callback->OnResult(authenticated);
-}