[Download-Rename] Change edit text UI height to 48dp.

- Change based on accessibility review

Bug: 1012450,952425
Change-Id: I0eb9deef8e5d731a59a421ffbc42b40e2fc938c8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1857600
Commit-Queue: David Trainor <dtrainor@chromium.org>
Reviewed-by: David Trainor <dtrainor@chromium.org>
Cr-Commit-Position: refs/heads/master@{#705608}

chrome/android/java/res_download/layout/download_rename_custom_dialog.xml

@@ -37,7 +37,7 @@
             <org.chromium.chrome.browser.ui.widget.text.AlertDialogEditText
                 android:id="@+id/file_name"
                 android:layout_width="match_parent"
-                android:layout_height="wrap_content"
+                android:layout_height="48dp"
                 android:cursorVisible="true"
                 android:singleLine="true" />