Keyguard icon colors matching light or dark theme

Bug: 37014702
Test: visual
Change-Id: If3ca3dc83e606d1199e0a9e9a12ffd344c9919b3
diff --git a/packages/SystemUI/res/layout/keyguard_bottom_area.xml b/packages/SystemUI/res/layout/keyguard_bottom_area.xml
index 143a462..ef9cf4a 100644
--- a/packages/SystemUI/res/layout/keyguard_bottom_area.xml
+++ b/packages/SystemUI/res/layout/keyguard_bottom_area.xml
@@ -39,7 +39,7 @@
             android:layout_height="wrap_content"
             android:gravity="center_horizontal"
             android:textStyle="italic"
-            android:textColor="#ffffff"
+            android:textColor="?attr/bgProtectSecondaryTextColor"
             android:textAppearance="?android:attr/textAppearanceSmall"
             android:visibility="gone" />
 
@@ -49,7 +49,7 @@
             android:layout_height="wrap_content"
             android:gravity="center_horizontal"
             android:textStyle="italic"
-            android:textColor="#ffffff"
+            android:textColor="?attr/bgProtectSecondaryTextColor"
             android:textAppearance="?android:attr/textAppearanceSmall"
             android:accessibilityLiveRegion="polite" />
 
@@ -68,7 +68,8 @@
         android:layout_gravity="bottom|end"
         android:src="@drawable/ic_camera_alt_24dp"
         android:scaleType="center"
-        android:contentDescription="@string/accessibility_camera_button" />
+        android:contentDescription="@string/accessibility_camera_button"
+        android:tint="?attr/bgProtectTextColor" />
 
     <com.android.systemui.statusbar.KeyguardAffordanceView
         android:id="@+id/left_button"
@@ -77,7 +78,8 @@
         android:layout_gravity="bottom|start"
         android:src="@drawable/ic_phone_24dp"
         android:scaleType="center"
-        android:contentDescription="@string/accessibility_phone_button" />
+        android:contentDescription="@string/accessibility_phone_button"
+        android:tint="?attr/bgProtectTextColor" />
 
     <com.android.systemui.statusbar.phone.LockIcon
         android:id="@+id/lock_icon"
@@ -86,7 +88,8 @@
         android:layout_gravity="bottom|center_horizontal"
         android:src="@drawable/ic_lock_24dp"
         android:contentDescription="@string/accessibility_unlock_button"
-        android:scaleType="center" />
+        android:scaleType="center"
+        android:tint="?attr/bgProtectTextColor" />
 
     <include layout="@layout/keyguard_bottom_area_overlay" />