[Cronet] Get Cronet performance test running again

components/cronet/android/test/src/org/chromium/net/CronetTestFramework.java

Index: components/cronet/android/test/src/org/chromium/net/CronetTestFramework.java
diff --git a/components/cronet/android/test/src/org/chromium/net/CronetTestFramework.java b/components/cronet/android/test/src/org/chromium/net/CronetTestFramework.java
index 3c625a746a279728a8a3e3be82a228a3087e16c4..ce631b8912c2d036a073175f5842648e2293db4a 100644
--- a/components/cronet/android/test/src/org/chromium/net/CronetTestFramework.java
+++ b/components/cronet/android/test/src/org/chromium/net/CronetTestFramework.java
@@ -65,6 +65,8 @@ public class CronetTestFramework {
         private LibraryInitType() {}
     }
 
+    private static boolean sLibCronetJavaTestsLoaded;
+
     public URLStreamHandlerFactory mStreamHandlerFactory;
     public CronetEngine mCronetEngine;
     @SuppressWarnings("deprecation") HttpUrlRequestFactory mRequestFactory;
@@ -99,6 +101,13 @@ public class CronetTestFramework {
         }
     }
 
+    private static void ensureLibCronetJavaTestsLoaded() {
+        if (!sLibCronetJavaTestsLoaded) {
+            sLibCronetJavaTestsLoaded = true;
+            System.loadLibrary("cronet_javatests");
+        }
+    }
+
     // TODO(crbug.com/547160): Fix this findbugs error and remove the suppression.
     @SuppressFBWarnings("EI_EXPOSE_REP2")
     public CronetTestFramework(
@@ -106,6 +115,8 @@ public class CronetTestFramework {
         mCommandLine = commandLine;
         mContext = context;
 
+        ensureLibCronetJavaTestsLoaded();
+
         // Print out extra arguments passed in starting this activity.
         if (commandLine != null) {
             assertEquals(0, commandLine.length % 2);