Initial commit of leanback uibench test

Include the main leanback BrowseFragment for testing.

Test: UiBenchLeanbackJankTests

Change-Id: I995bc726e267c74150a82575f4ffcf4a4d44b9c3
diff --git a/tests/UiBench/build.gradle b/tests/UiBench/build.gradle
index 03ef7f1..fa2cfcd 100644
--- a/tests/UiBench/build.gradle
+++ b/tests/UiBench/build.gradle
@@ -36,4 +36,5 @@
     compile 'com.android.support:cardview-v7:23.0.1'
     compile 'com.android.support:recyclerview-v7:23.0.1'
     compile 'com.android.support:design:23.0.1'
+    compile 'com.android.support:leanback-v17:23.0.1'
 }