Use collapse handle area height to calculate QSB margin on tablet

Fix: 228324815
Test: Check AllApps on different size tablets
Change-Id: Ia7064c21dd1810051e93eedee36bc14f125d8352
diff --git a/res/layout/all_apps_bottom_sheet_background.xml b/res/layout/all_apps_bottom_sheet_background.xml
index 12b6b7b..3e47690 100644
--- a/res/layout/all_apps_bottom_sheet_background.xml
+++ b/res/layout/all_apps_bottom_sheet_background.xml
@@ -22,7 +22,7 @@
     <View
         android:id="@+id/bottom_sheet_handle_area"
         android:layout_width="match_parent"
-        android:layout_height="36dp" />
+        android:layout_height="@dimen/bottom_sheet_handle_area_height" />
 
     <View
         android:id="@+id/bottom_sheet_handle"
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index d095ae3..e8e318b 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -410,6 +410,7 @@
 
     <!-- Bottom sheet related parameters -->
     <dimen name="bottom_sheet_extra_top_padding">0dp</dimen>
+    <dimen name="bottom_sheet_handle_area_height">36dp</dimen>
     <dimen name="bottom_sheet_handle_width">32dp</dimen>
     <dimen name="bottom_sheet_handle_height">4dp</dimen>
     <dimen name="bottom_sheet_handle_margin">16dp</dimen>