Merge "Fix a11y issue, the description of navigation buttons should be the same."

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:theme="?android:attr/actionBarTheme"

        android:navigationContentDescription="@*android:string/action_bar_up_description" />

        android:navigationContentDescription="@*android:string/back_button_label" />

    <FrameLayout

        android:id="@+id/content_frame"

        android:layout_width="match_parent"