[Android] Prompt with infobar on filename conflict

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

Index: chrome/browser/ui/android/infobars/download_overwrite_infobar.h
diff --git a/chrome/browser/ui/android/infobars/download_overwrite_infobar.h b/chrome/browser/ui/android/infobars/download_overwrite_infobar.h
new file mode 100644
index 0000000000000000000000000000000000000000..67a949b7415fe1b70bf0fd5aaf07956781819390
--- /dev/null
+++ b/chrome/browser/ui/android/infobars/download_overwrite_infobar.h
@@ -0,0 +1,43 @@
+// Copyright 2015 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_DOWNLOAD_OVERWRITE_INFOBAR_H_
+#define CHROME_BROWSER_UI_ANDROID_INFOBARS_DOWNLOAD_OVERWRITE_INFOBAR_H_
+
+#include "base/android/scoped_java_ref.h"
+#include "base/basictypes.h"
+#include "chrome/browser/ui/android/infobars/infobar_android.h"
+
+namespace chrome {
+namespace android {
+class DownloadOverwriteInfoBarDelegate;
+}
+}
+
+// A native-side implementation of an infobar to ask whether to overwrite
+// an existing file with a new download.
+class DownloadOverwriteInfoBar : public InfoBarAndroid {
+ public:
+  static scoped_ptr<infobars::InfoBar> CreateInfoBar(
+      scoped_ptr<chrome::android::DownloadOverwriteInfoBarDelegate> delegate);
+  ~DownloadOverwriteInfoBar() override;
+
+ private:
+  explicit DownloadOverwriteInfoBar(
+      scoped_ptr<chrome::android::DownloadOverwriteInfoBarDelegate> delegate);
+
+  // InfoBarAndroid:
+  base::android::ScopedJavaLocalRef<jobject> CreateRenderInfoBar(
+      JNIEnv* env) override;
+  void ProcessButton(int action, const std::string& action_value) override;
+
+  chrome::android::DownloadOverwriteInfoBarDelegate* GetDelegate();
+
+  DISALLOW_COPY_AND_ASSIGN(DownloadOverwriteInfoBar);
+};
+
+// Registers the native methods through JNI.
+bool RegisterDownloadOverwriteInfoBarDelegate(JNIEnv* env);
+
+#endif  // CHROME_BROWSER_UI_ANDROID_INFOBARS_DOWNLOAD_OVERWRITE_INFOBAR_H_