Shi-Hao Hong dee8e4211e
[Material] Implement TooltipTheme and Tooltip.textStyle, update Tooltip defaults (#36856)
* Implement TooltipThemeData and TooltipTheme

* Add text style property 

* Updated tooltip default colors for light and dark theme to match Material specification
2019-07-25 09:09:24 -07:00
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2019-06-06 16:26:12 -07:00