Call Activity.onTrimMemory() to ensure render thread cache is also trimmed

Bug: 76162466
Change-Id: Ie3cf9076ba8149c0f2d7e58b5ca0c974ae914c18

quickstep/src/com/android/quickstep/RecentsActivity.java

@@ -231,7 +231,7 @@ public class RecentsActivity extends BaseDraggingActivity {
         super.onStop();
 
         // Workaround for b/78520668, explicitly trim memory once UI is hidden
-        UiFactory.onTrimMemory(this, TRIM_MEMORY_UI_HIDDEN);
+        onTrimMemory(TRIM_MEMORY_UI_HIDDEN);
     }
 
     @Override

src/com/android/launcher3/Launcher.java

@@ -738,7 +738,7 @@ public class Launcher extends BaseDraggingActivity
         getStateManager().moveToRestState();
 
         // Workaround for b/78520668, explicitly trim memory once UI is hidden
-        UiFactory.onTrimMemory(this, TRIM_MEMORY_UI_HIDDEN);
+        onTrimMemory(TRIM_MEMORY_UI_HIDDEN);
     }
 
     @Override