Update Scrim values for blur

Set foreground color to ScrimView in overview. Added new state property
for foreground.

Fix: 412928191
Test: Go to overview
Flag: com.android.launcher3.enable_overview_background_wallpaper_blur
Change-Id: Id4180eaa5501dc11bf7331073edb28dca5c4a13a

src/com/android/launcher3/WorkspaceStateTransitionAnimation.java

@@ -207,7 +207,7 @@ public class WorkspaceStateTransitionAnimation {
         propertySetter.setFloat(sysUiScrim.getSysUIProgress(), AnimatedFloat.VALUE,
                 state.hasFlag(FLAG_HAS_SYS_UI_SCRIM) ? 1 : 0, LINEAR);
 
-        propertySetter.setViewBackgroundColor(mLauncher.getScrimView(),
+        propertySetter.setScrimColors(mLauncher.getScrimView(),
                 state.getWorkspaceScrimColor(mLauncher),
                 config.getInterpolator(ANIM_SCRIM_FADE, ACCELERATE_2));
     }