You can enable the debugging of a Web component through Chrome.
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Connect your device to your desktop with a USB cable.
 
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If GMA is running on your device, stop GMA on your device.
 
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Enable USB debugging on the device.
 
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Run your application with a web component.
 
Tip: Please be patient as the application may take longer to start.
 GMA starts with debug service enabled.
 
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Open Chrome on your desktop.
 
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In the Chrome address bar, enter chrome://inspect/#devices.
 
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Check Discover USB devices. 
 
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Accept the USB debugging on your device.
 
A list of URLs appear. You can inspect the individual pages.