Add new samples to sdk.atree

- PermissionRequest
- DirectorySelection
- AppUsageStatistics
- ScreenCapture

Change-Id: I78d70f47dab54bc40a0e4e320ce6f8799b2cc785
diff --git a/build/sdk.atree b/build/sdk.atree
index c727b59..4607fbc 100644
--- a/build/sdk.atree
+++ b/build/sdk.atree
@@ -306,6 +306,10 @@
 developers/build/prebuilts/gradle/PdfRendererBasic                           samples/${PLATFORM_NAME}/ui/graphics/PdfRendererBasic
 developers/build/prebuilts/gradle/FloatingActionButtonBasic                  samples/${PLATFORM_NAME}/ui/views/FloatingActionButton/FloatingActionButtonBasic
 developers/build/prebuilts/gradle/RevealEffectBasic                          samples/${PLATFORM_NAME}/ui/views/RevealEffect/RevealEffectBasic
+developers/build/prebuilts/gradle/PermissionRequest                          samples/${PLATFORM_NAME}/content/webview/PermissionRequest
+developers/build/prebuilts/gradle/DirectorySelection                         samples/${PLATFORM_NAME}/content/documentsUi/DirectorySelection
+developers/build/prebuilts/gradle/AppUsageStatistics                         samples/${PLATFORM_NAME}/system/AppUsageStatistics
+developers/build/prebuilts/gradle/ScreenCapture                              samples/${PLATFORM_NAME}/media/ScreenCapture
 
 developers/build/prebuilts/androidtv                                         samples/${PLATFORM_NAME}/androidtv