[Android] Use lambdas in FirstRunIntegrationTest

This CL replaces anonymous classes with lambdas in
FirstRunIntegrationTest without any changes to the behavior.

Bug: None
Change-Id: I0ab8e9bc38f6c1dec82c65480b2ccf71eda5538a
Reviewed-on: https://chromium-review.googlesource.com/955563Reviewed-by: David Trainor <dtrainor@chromium.org>
Commit-Queue: Boris Sazonov <bsazonov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#541854}

chrome/android/javatests/src/org/chromium/chrome/browser/firstrun/FirstRunIntegrationTest.java

@@ -68,15 +68,12 @@ public class FirstRunIntegrationTest {
     @SmallTest
     public void testGenericViewIntentGoesToFirstRun() {
         final String asyncClassName = ChromeLauncherActivity.class.getName();
-        runFirstRunRedirectTestForActivity(asyncClassName, new Runnable() {
-            @Override
-            public void run() {
+        runFirstRunRedirectTestForActivity(asyncClassName, () -> {
             final Context context = InstrumentationRegistry.getTargetContext();
             Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://test.com"));
             intent.setPackage(context.getPackageName());
             intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
             context.startActivity(intent);
-            }
         });
     }
 
@@ -84,15 +81,12 @@ public class FirstRunIntegrationTest {
     @SmallTest
     public void testRedirectCustomTabActivityToFirstRun() {
         final String asyncClassName = ChromeLauncherActivity.class.getName();
-        runFirstRunRedirectTestForActivity(asyncClassName, new Runnable() {
-            @Override
-            public void run() {
+        runFirstRunRedirectTestForActivity(asyncClassName, () -> {
             Context context = InstrumentationRegistry.getTargetContext();
             CustomTabsIntent customTabIntent = new CustomTabsIntent.Builder().build();
             customTabIntent.intent.setPackage(context.getPackageName());
             customTabIntent.intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
             customTabIntent.launchUrl(context, Uri.parse("http://test.com"));
-            }
         });
     }
 
@@ -100,15 +94,12 @@ public class FirstRunIntegrationTest {
     @SmallTest
     public void testRedirectChromeTabbedActivityToFirstRun() {
         final String asyncClassName = ChromeTabbedActivity.class.getName();
-        runFirstRunRedirectTestForActivity(asyncClassName, new Runnable() {
-            @Override
-            public void run() {
+        runFirstRunRedirectTestForActivity(asyncClassName, () -> {
             final Context context = InstrumentationRegistry.getTargetContext();
             Intent intent = new Intent();
             intent.setClassName(context, asyncClassName);
             intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
             context.startActivity(intent);
-            }
         });
     }
 
@@ -116,15 +107,12 @@ public class FirstRunIntegrationTest {
     @SmallTest
     public void testRedirectSearchActivityToFirstRun() {
         final String asyncClassName = SearchActivity.class.getName();
-        runFirstRunRedirectTestForActivity(asyncClassName, new Runnable() {
-            @Override
-            public void run() {
+        runFirstRunRedirectTestForActivity(asyncClassName, () -> {
             final Context context = InstrumentationRegistry.getTargetContext();
             Intent intent = new Intent();
             intent.setClassName(context, asyncClassName);
             intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
             context.startActivity(intent);
-            }
         });
     }
 
@@ -348,13 +336,10 @@ public class FirstRunIntegrationTest {
             }
         });
 
-        ThreadUtils.runOnUiThread(new Runnable() {
-            @Override
-            public void run() {
+        ThreadUtils.runOnUiThread(() -> {
             Button button = (Button) activity.findViewById(id);
             Assert.assertNotNull(message, button);
             button.performClick();
-            }
         });
     }
 }