[Cronet] Test the libcronet that's shipped, not libcronet_test

components/cronet/android/java/src/org/chromium/net/impl/CronetUrlRequestContext.java

Index: components/cronet/android/java/src/org/chromium/net/impl/CronetUrlRequestContext.java
diff --git a/components/cronet/android/java/src/org/chromium/net/impl/CronetUrlRequestContext.java b/components/cronet/android/java/src/org/chromium/net/impl/CronetUrlRequestContext.java
index 819347d57a1cad185362e7e0315d0afc3d09fe71..a19d3c5b4105b79b02895dd34ff170efe0028513 100644
--- a/components/cronet/android/java/src/org/chromium/net/impl/CronetUrlRequestContext.java
+++ b/components/cronet/android/java/src/org/chromium/net/impl/CronetUrlRequestContext.java
@@ -478,6 +478,14 @@ public class CronetUrlRequestContext extends CronetEngine {
         }
     }
 
+    @VisibleForTesting
+    public long getUrlRequestContextForTesting() {
+        synchronized (mLock) {
+            checkHaveAdapter();
+            return nativeGetUrlRequestContextForTesting(mUrlRequestContextAdapter);
+        }
+    }
+
     @GuardedBy("mLock")
     private void checkHaveAdapter() throws IllegalStateException {
         if (!haveRequestContextAdapter()) {
@@ -641,6 +649,9 @@ public class CronetUrlRequestContext extends CronetEngine {
     @NativeClassQualifiedName("CronetURLRequestContextAdapter")
     private native void nativeProvideThroughputObservations(long nativePtr, boolean should);
 
+    @NativeClassQualifiedName("CronetURLRequestContextAdapter")
+    private native long nativeGetUrlRequestContextForTesting(long nativePtr);
+
     public boolean isNetworkThread(Thread thread) {
         return thread == mNetworkThread;
     }