Move the user agent styles sheets to blink_resources.grd (Part 2) with Unit test support

testing/android/java/src/org/chromium/native_test/ChromeNativeTestActivity.java

Index: testing/android/java/src/org/chromium/native_test/ChromeNativeTestActivity.java
diff --git a/testing/android/java/src/org/chromium/native_test/ChromeNativeTestActivity.java b/testing/android/java/src/org/chromium/native_test/ChromeNativeTestActivity.java
index 1d29bcd6e45d7e65baf2ab38f009a800fb385bfc..c5a4b58f8582276ca8cfb4a3c8be18c8139af91a 100644
--- a/testing/android/java/src/org/chromium/native_test/ChromeNativeTestActivity.java
+++ b/testing/android/java/src/org/chromium/native_test/ChromeNativeTestActivity.java
@@ -12,6 +12,7 @@ import android.util.Log;
 
 import org.chromium.base.PathUtils;
 import org.chromium.base.PowerMonitor;
+import org.chromium.base.ResourceExtractor;
 import org.chromium.base.library_loader.NativeLibraries;
 
 /**
@@ -28,9 +29,15 @@ public class ChromeNativeTestActivity extends Activity {
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+
         // Needed by path_utils_unittest.cc
         PathUtils.setPrivateDataDirectorySuffix("chrome");
 
+        ResourceExtractor resourceExtractor = ResourceExtractor.get(getApplicationContext());
+        resourceExtractor.collectAllPackagedPakAssets();
+        resourceExtractor.startExtractingResources();
+        resourceExtractor.waitForCompletion();
+
         // Needed by system_monitor_unittest.cc
         PowerMonitor.createForTests(this);