Adding a delete action to the screenshot notification.

        <!-- Callback for dismissing screenshot notification after a share target is picked -->

        <receiver android:name=".screenshot.GlobalScreenshot$TargetChosenReceiver"

                  android:process=":screenshot"

                  android:exported="false" />

        <!-- Callback for deleting screenshot notification -->

        <receiver android:name=".screenshot.GlobalScreenshot$DeleteScreenshotReceiver"

                  android:process=":screenshot"

                  android:exported="false" />

        <!-- started from UsbDeviceSettingsManager -->