Add UiThreadExecutor

This CL adds an executor which runs tasks on the Ui thread, using the existing
ThreadUtil class.

Bug: 67752611
Test: UiThreadExecutorTest
PiperOrigin-RevId: 175046280
Change-Id: Iff15e216be0e91891a9d63fddf1288ecbec41f83
diff --git a/java/com/android/dialer/common/concurrent/DialerExecutorModule.java b/java/com/android/dialer/common/concurrent/DialerExecutorModule.java
index 68910fb..5e0190e 100644
--- a/java/com/android/dialer/common/concurrent/DialerExecutorModule.java
+++ b/java/com/android/dialer/common/concurrent/DialerExecutorModule.java
@@ -19,8 +19,10 @@
 import com.android.dialer.common.LogUtil;
 import com.android.dialer.common.concurrent.Annotations.NonUiParallel;
 import com.android.dialer.common.concurrent.Annotations.NonUiSerial;
+import com.android.dialer.common.concurrent.Annotations.Ui;
 import com.android.dialer.common.concurrent.Annotations.UiParallel;
 import com.android.dialer.common.concurrent.Annotations.UiSerial;
+import com.google.common.util.concurrent.ListeningExecutorService;
 import dagger.Binds;
 import dagger.Module;
 import dagger.Provides;
@@ -41,6 +43,13 @@
 
   @Provides
   @Singleton
+  @Ui
+  static ListeningExecutorService provideUiThreadExecutorService() {
+    return new UiThreadExecutor();
+  }
+
+  @Provides
+  @Singleton
   @NonUiParallel
   static ExecutorService provideNonUiThreadPool() {
     return Executors.newFixedThreadPool(