Included UMP integration to FullScreenNativeExample. Updated UI/UX to FullScreenNativeExample

PiperOrigin-RevId: 684827086

Author: malandr2

java/admob/FullScreenNativeExample/app/build.gradle

@@ -18,16 +18,11 @@ android {
             proguardFiles getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro"
         }
     }
+    buildFeatures { viewBinding = true }
 }
 
 dependencies {
-    implementation 'androidx.appcompat:appcompat:1.6.1'
+    implementation 'androidx.appcompat:appcompat:1.7.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
-    implementation 'androidx.recyclerview:recyclerview:1.3.2'
-    implementation 'androidx.media3:media3-exoplayer:1.3.1'
-    implementation 'androidx.media3:media3-exoplayer-dash:1.3.1'
-    implementation 'androidx.media3:media3-ui:1.3.1'
-    implementation 'androidx.media3:media3-session:1.3.1'
     implementation 'com.google.android.gms:play-services-ads:23.4.0'
-    implementation 'androidx.media3:media3-common:1.3.1'
 }

java/admob/FullScreenNativeExample/app/src/main/AndroidManifest.xml

@@ -2,16 +2,14 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
   <uses-permission android:name="android.permission.INTERNET" />
-  <!-- Workaround for ExoPlayer dependency when targeting API 33: https://github.com/google/ExoPlayer/issues/10884 -->
-  <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
   <application
       android:allowBackup="true"
       android:icon="@mipmap/ic_launcher"
       android:label="@string/app_name"
       android:networkSecurityConfig="@xml/network_security_config"
       android:roundIcon="@mipmap/ic_launcher_round"
       android:taskAffinity=""
-      android:theme="@style/AppTheme">
+      android:theme="@style/Theme.AppCompat.Light">
     <meta-data
         android:name="com.google.android.gms.ads.APPLICATION_ID"
         android:value="ca-app-pub-3940256099942544~3347511713" />
@@ -21,9 +19,8 @@
         android:value="true" />
 
     <activity
-        android:name="com.google.example.gms.fullscreennativeexample.VideoFeedsActivity"
-        android:exported="true"
-        android:label="@string/app_name">
+        android:name="com.google.example.gms.fullscreennativeexample.MainActivity"
+        android:exported="true">
       <intent-filter>
         <action android:name="android.intent.action.MAIN" />
         <category android:name="android.intent.category.LAUNCHER" />