Change work profile switch to floating button

This is an initial CL to replace the old switch button. This CL only
focusses on introducing the new floating action button:
* Remove the work profile switch
* Add extended floating action button for switching between profiles
* Hide the button in preview mode and when an item is selected
* Hide the button in Album photos view

More specifications will follow soon

Bug: 190727775
Test: manual

Change-Id: I9231a9d13bc5e237feb137ed9c43bd5e933a8e53
Merged-In: I9231a9d13bc5e237feb137ed9c43bd5e933a8e53
(cherry picked from commit 3970fee99898cd4ab20aa8a3bacedf7b833f5c84)
diff --git a/res/values/colors.xml b/res/values/colors.xml
index d3def67..bf7b280 100644
--- a/res/values/colors.xml
+++ b/res/values/colors.xml
@@ -37,4 +37,8 @@
     <color name="preview_default_blue">#8AB4F8</color>
     <color name="preview_default_grey">#202124</color>
     <color name="preview_default_black">@android:color/black</color>
+
+    <!-- PhotoPicker Preview -->
+    <color name="picker_profile_button_text_and_icon_color">#0B57D0</color>
+    <color name="picker_profile_button_background">#E8F0FE</color>
 </resources>