Implement instant apps infobar.

chrome/browser/ui/android/infobars/instant_apps_infobar.h

+// 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.
+
+#ifndef CHROME_BROWSER_UI_ANDROID_INFOBARS_INSTANT_APPS_INFOBAR_H_
+#define CHROME_BROWSER_UI_ANDROID_INFOBARS_INSTANT_APPS_INFOBAR_H_
+
+#include "base/android/scoped_java_ref.h"
+#include "base/macros.h"
+#include "chrome/browser/android/instantapps/instant_apps_infobar_delegate.h"
+#include "chrome/browser/ui/android/infobars/confirm_infobar.h"
+
+class InstantAppsInfoBar : public ConfirmInfoBar {

[Peter Kasting, 2016/08/23 07:59:22]

Subclassing ConfirmInfoBar seems wrong.  Seems like you should be subclassing
InfoBarAndroid.

[Maria, 2016/08/23 21:30:28]

ConfirmInfoBar is a subclass of InfoBarAndroid that sets up some shared
boilerplate for all infobars of this type.

[Peter Kasting, 2016/08/23 22:10:57]

Argh.  I wish that were named ConfirmInfoBarAndroid.  ConfirmInfoBar is also the
name of a views InfoBar subclass.  I was thinking of that one.

+ public:
+  InstantAppsInfoBar(
+      std::unique_ptr<InstantAppsInfoBarDelegate> delegate);
+
+  ~InstantAppsInfoBar() override;
+
+ private:
+  // ConfimInfoBar:
+  base::android::ScopedJavaLocalRef<jobject> CreateRenderInfoBar(
+      JNIEnv* env) override;
+
+  base::android::ScopedJavaGlobalRef<jobject> java_infobar_;
+
+  DISALLOW_COPY_AND_ASSIGN(InstantAppsInfoBar);
+};
+
+// Register native methods.
+bool RegisterInstantAppInfoBar(JNIEnv* env);
+
+#endif  // CHROME_BROWSER_UI_ANDROID_INFOBARS_INSTANT_APPS_INFOBAR_H_