[ Widget Preview ] Add a "Restart Widget Previewer" button to the widget preview scaffold #171602
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…get preview scaffold This allows for developers to perform a hot restart on the preview environment in the case they get into a bad state. This change adds a 'hotRestartPreviewer' method to the 'widget-preview' DTD service registered by the Flutter Tool, which is invoked by the previewer.
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… the widget preview scaffold (flutter/flutter#171602)
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…get preview scaffold (flutter#171602) This allows for developers to perform a hot restart on the preview environment in the case they get into a bad state. This change adds a `hotRestartPreviewer` method to the `widget-preview` DTD service registered by the Flutter Tool, which is invoked by the previewer. 
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…get preview scaffold (flutter#171602) This allows for developers to perform a hot restart on the preview environment in the case they get into a bad state. This change adds a `hotRestartPreviewer` method to the `widget-preview` DTD service registered by the Flutter Tool, which is invoked by the previewer. 
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… the widget preview scaffold (flutter/flutter#171602)
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…get preview scaffold (flutter#171602) This allows for developers to perform a hot restart on the preview environment in the case they get into a bad state. This change adds a `hotRestartPreviewer` method to the `widget-preview` DTD service registered by the Flutter Tool, which is invoked by the previewer. 
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This allows for developers to perform a hot restart on the preview environment in the case they get into a bad state.
This change adds a
hotRestartPreviewermethod to thewidget-previewDTD service registered by the Flutter Tool, which is invoked by the previewer.