Tune floating rotation button size

Bug: 216182085
Test: https://recall.googleplex.com/projects/8b6d2fc1-ac47-4776-b2cd-919ec4f7c74c/sessions/95608ec0-1b25-46c9-9e15-eddaaa03e50b
Change-Id: I4bc3ab7aad2840d4029c3dae6053cfa2c936fe81
diff --git a/quickstep/res/values/dimens.xml b/quickstep/res/values/dimens.xml
index 3072a3e..0fd3c4a 100644
--- a/quickstep/res/values/dimens.xml
+++ b/quickstep/res/values/dimens.xml
@@ -239,7 +239,7 @@
     <dimen name="navigation_key_padding">0dp</dimen>
 
     <!-- Floating rotation button -->
-    <dimen name="floating_rotation_button_diameter">40dp</dimen>
+    <dimen name="floating_rotation_button_diameter">52dp</dimen>
     <dimen name="floating_rotation_button_min_margin">20dp</dimen>
     <dimen name="floating_rotation_button_taskbar_left_margin">20dp</dimen>
     <dimen name="floating_rotation_button_taskbar_bottom_margin">10dp</dimen>