chore(magnification settings): add logging for zoom slider in settings panel

Bug: 281241589
Test: atest frameworks/base/packages/SystemUI/tests/src/com/android/systemui/accessibility/WindowMagnificationTest.java
  && aster-previz

Change-Id: Ieeb523ce7dab1712b2d8c1272c7c92be5a223e13

packages/SystemUI/src/com/android/systemui/accessibility/AccessibilityLogger.kt

@@ -93,6 +93,9 @@ constructor(private val uiEventLogger: UiEventLogger, private val clock: SystemC
         @UiEvent(doc = "Magnification settings panel edit size save button clicked")
         MAGNIFICATION_SETTINGS_SIZE_EDITING_DEACTIVATED(1384),
 
+        @UiEvent(doc = "Magnification settings panel zoom slider changed")
+        MAGNIFICATION_SETTINGS_ZOOM_SLIDER_CHANGED(1385),
+
         @UiEvent(
             doc =
                 "Magnification settings panel window size selected. The selection rank is " +

packages/SystemUI/src/com/android/systemui/accessibility/WindowMagnification.java

@@ -371,6 +371,9 @@ public class WindowMagnification implements CoreStartable, CommandQueue.Callback
             if (mWindowMagnificationConnectionImpl != null) {
                 mWindowMagnificationConnectionImpl.onPerformScaleAction(displayId, scale);
             }
+            mA11yLogger.logThrottled(
+                    MagnificationSettingsEvent.MAGNIFICATION_SETTINGS_ZOOM_SLIDER_CHANGED
+            );
         }
 
         @Override

packages/SystemUI/tests/src/com/android/systemui/accessibility/WindowMagnificationTest.java

@@ -259,6 +259,8 @@ public class WindowMagnificationTest extends SysuiTestCase {
                 TEST_DISPLAY, scale);
 
         verify(mConnectionCallback).onPerformScaleAction(eq(TEST_DISPLAY), eq(scale));
+        verify(mA11yLogger).logThrottled(
+                eq(MagnificationSettingsEvent.MAGNIFICATION_SETTINGS_ZOOM_SLIDER_CHANGED));
     }
 
     @Test