Increment TeX counters for the HCT migration notification.

See the corresponding TeX change for more details.

Bug: 369906140
Flag: com.android.graphics.hwui.flags.high_contrast_text_small_text_rect
Test: run statsd_testdrive 644 and verify the output when the
      notification appears
Test: ensure that rotating / restarting the activity does not trigger
      multiple increments to the counter
Change-Id: Iea01962611e3e327cfbde6f3451f7f1ec54b955e

src/com/android/settings/accessibility/TextReadingPreferenceFragment.java

@@ -34,6 +34,8 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
 
+import com.android.graphics.hwui.flags.Flags;
+import com.android.modules.expresslog.Counter;
 import com.android.settings.R;
 import com.android.settings.accessibility.AccessibilityDialogUtils.DialogEnums;
 import com.android.settings.dashboard.DashboardFragment;
@@ -84,6 +86,7 @@ public class TextReadingPreferenceFragment extends DashboardFragment {
             EntryPoint.SUW_ANYTHING_ELSE,
             EntryPoint.DISPLAY_SETTINGS,
             EntryPoint.ACCESSIBILITY_SETTINGS,
+            EntryPoint.HIGH_CONTRAST_TEXT_NOTIFICATION,
     })
     @interface EntryPoint {
         int UNKNOWN_ENTRY = 0;
@@ -91,6 +94,7 @@ public class TextReadingPreferenceFragment extends DashboardFragment {
         int SUW_ANYTHING_ELSE = 2;
         int DISPLAY_SETTINGS = 3;
         int ACCESSIBILITY_SETTINGS = 4;
+        int HIGH_CONTRAST_TEXT_NOTIFICATION = 5;
     }
 
     @VisibleForTesting
@@ -121,6 +125,14 @@ public class TextReadingPreferenceFragment extends DashboardFragment {
             rootView.setAccessibilityPaneTitle(getString(
                     R.string.accessibility_text_reading_options_title));
         }
+        if (Flags.highContrastTextSmallTextRect()) {
+            updateEntryPoint();
+            if (mEntryPoint == EntryPoint.HIGH_CONTRAST_TEXT_NOTIFICATION
+                    // Only log this counter during the first launch, not during activity refresh
+                    && savedInstanceState == null) {
+                Counter.logIncrement("accessibility.value_hct_notification_opened_settings");
+            }
+        }
     }
 
     @Override