Adding small padding between icons in AllApps.

        <item name="android:textColor">@color/quantum_panel_text_color</item>

        <item name="android:drawablePadding">@dimen/dynamic_grid_icon_drawable_padding</item>

        <item name="android:shadowRadius">0</item>

        <item name="android:paddingLeft">4dp</item>

        <item name="android:paddingRight">4dp</item>

        <item name="customShadows">false</item>

    </style>