Convert //chrome/browser/ui from scoped_ptr to std::unique_ptr

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
index fa7215a1a4acefc5c243630b05f470286a2448ae..168dbd18cd22c97c506923608f94ede3a94821c5 100644
--- a/chrome/browser/ui/android/infobars/download_overwrite_infobar.h
+++ b/chrome/browser/ui/android/infobars/download_overwrite_infobar.h
@@ -19,13 +19,15 @@ class DownloadOverwriteInfoBarDelegate;
 // an existing file with a new download.
 class DownloadOverwriteInfoBar : public InfoBarAndroid {
  public:
-  static scoped_ptr<infobars::InfoBar> CreateInfoBar(
-      scoped_ptr<chrome::android::DownloadOverwriteInfoBarDelegate> delegate);
+  static std::unique_ptr<infobars::InfoBar> CreateInfoBar(
+      std::unique_ptr<chrome::android::DownloadOverwriteInfoBarDelegate>
+          delegate);
   ~DownloadOverwriteInfoBar() override;
 
  private:
   explicit DownloadOverwriteInfoBar(
-      scoped_ptr<chrome::android::DownloadOverwriteInfoBarDelegate> delegate);
+      std::unique_ptr<chrome::android::DownloadOverwriteInfoBarDelegate>
+          delegate);
 
   // InfoBarAndroid:
   base::android::ScopedJavaLocalRef<jobject> CreateRenderInfoBar(