Ensure back button shows up in Simple View for SUW

This change adds support for the dynamic changing of navigation modes in
SUW such that the back button will be visible in both states. Previously
there was no way to switch navigation modes during Setup Wizard, before the
introduction of Simple View. The buttons were not being drawn correctly
(or at all).

Fix: 381016997
Fix: 381363853
Test: Rerun SUW, enable simple view and ensure that the back buttons
works in both orientations and that the SUW buttons are unaffected
Flag: EXEMPT bugfix

Change-Id: Ifbdf0c9cd06f1347e6c2c9a943711cefbf6bff2c

quickstep/src/com/android/launcher3/taskbar/navbutton/AbstractNavButtonLayoutter.kt

@@ -27,7 +27,6 @@ import android.widget.Space
 import com.android.launcher3.DeviceProfile
 import com.android.launcher3.R
 import com.android.launcher3.Utilities
-import com.android.launcher3.taskbar.TaskbarActivityContext
 import com.android.launcher3.taskbar.navbutton.NavButtonLayoutFactory.NavButtonLayoutter
 
 /**
@@ -48,7 +47,7 @@ abstract class AbstractNavButtonLayoutter(
     protected val startContextualContainer: ViewGroup,
     protected val imeSwitcher: ImageView?,
     protected val a11yButton: ImageView?,
-    protected val space: Space?
+    protected val space: Space?,
 ) : NavButtonLayoutter {
     protected val homeButton: ImageView? = navButtonContainer.findViewById(R.id.home)
     protected val recentsButton: ImageView? = navButtonContainer.findViewById(R.id.recent_apps)
@@ -69,26 +68,34 @@ abstract class AbstractNavButtonLayoutter(
         val params =
             FrameLayout.LayoutParams(
                 ViewGroup.LayoutParams.MATCH_PARENT,
-                ViewGroup.LayoutParams.MATCH_PARENT
+                ViewGroup.LayoutParams.MATCH_PARENT,
             )
         params.gravity = Gravity.CENTER
         return params
     }
 
+    /**
+     * Adjusts the layout parameters of the nav bar container for setup in phone mode.
+     *
+     * @param nearestTouchFrameLayoutParams The layout parameters of the navButtonsView, which is
+     *   the ViewGroup that contains start, end, nav button ViewGroups
+     * @param deviceProfile The device profile containing information about the device's
+     *   configuration.
+     */
     fun adjustForSetupInPhoneMode(
-        navButtonsLayoutParams: FrameLayout.LayoutParams,
-        navButtonsViewLayoutParams: FrameLayout.LayoutParams,
-        deviceProfile: DeviceProfile
+        nearestTouchFrameLayoutParams: FrameLayout.LayoutParams,
+        deviceProfile: DeviceProfile,
     ) {
         val phoneOrPortraitSetupMargin =
             resources.getDimensionPixelSize(R.dimen.taskbar_contextual_button_suw_margin)
-        navButtonsLayoutParams.marginStart = phoneOrPortraitSetupMargin
-        navButtonsLayoutParams.bottomMargin =
+        nearestTouchFrameLayoutParams.marginStart = phoneOrPortraitSetupMargin
+        nearestTouchFrameLayoutParams.bottomMargin =
             if (!deviceProfile.isLandscape) 0
             else
                 phoneOrPortraitSetupMargin -
-                        resources.getDimensionPixelSize(R.dimen.taskbar_nav_buttons_size) / 2
-        navButtonsViewLayoutParams.height =
+                    resources.getDimensionPixelSize(R.dimen.taskbar_nav_buttons_size) / 2
+
+        nearestTouchFrameLayoutParams.height =
             resources.getDimensionPixelSize(R.dimen.taskbar_contextual_button_suw_height)
     }
 
@@ -97,7 +104,7 @@ abstract class AbstractNavButtonLayoutter(
         buttonSize: Int,
         barAxisMarginStart: Int,
         barAxisMarginEnd: Int,
-        gravity: Int
+        gravity: Int,
     ) {
         val contextualContainerParams =
             FrameLayout.LayoutParams(buttonSize, ViewGroup.LayoutParams.MATCH_PARENT)