Add HttpUrlConnection backed implementation of CronetEngine.

components/cronet/android/test/javatests/src/org/chromium/net/CronetUrlRequestContextTest.java

Index: components/cronet/android/test/javatests/src/org/chromium/net/CronetUrlRequestContextTest.java
diff --git a/components/cronet/android/test/javatests/src/org/chromium/net/CronetUrlRequestContextTest.java b/components/cronet/android/test/javatests/src/org/chromium/net/CronetUrlRequestContextTest.java
index 32c28aaf7964964a144a4bfd90e0dfda0f5938ac..be04e1a8c6f0891f432588751de29ea80e73161a 100644
--- a/components/cronet/android/test/javatests/src/org/chromium/net/CronetUrlRequestContextTest.java
+++ b/components/cronet/android/test/javatests/src/org/chromium/net/CronetUrlRequestContextTest.java
@@ -125,6 +125,8 @@ public class CronetUrlRequestContextTest extends CronetTestBase {
 
     @SmallTest
     @Feature({"Cronet"})
+    @OnlyRunNativeCronet
+    // Depends on creating a new CronetEngine, which the test framework doesn't yet support
     public void testConfigUserAgent() throws Exception {
         String userAgentName = "User-Agent";
         String userAgentValue = "User-Agent-Value";
@@ -145,6 +147,7 @@ public class CronetUrlRequestContextTest extends CronetTestBase {
 
     @SmallTest
     @Feature({"Cronet"})
+    @OnlyRunNativeCronet
     // TODO(xunjieli): Remove annotation after crbug.com/539519 is fixed.
     @SuppressWarnings("deprecation")
     public void testDataReductionProxyEnabled() throws Exception {
@@ -429,6 +432,7 @@ public class CronetUrlRequestContextTest extends CronetTestBase {
 
     @SmallTest
     @Feature({"Cronet"})
+    @OnlyRunNativeCronet
     public void testNetLog() throws Exception {
         Context context = getContext();
         File directory = new File(PathUtils.getDataDirectory(context));
@@ -531,6 +535,7 @@ public class CronetUrlRequestContextTest extends CronetTestBase {
 
     @SmallTest
     @Feature({"Cronet"})
+    @OnlyRunNativeCronet
     public void testNetLogWithBytes() throws Exception {
         Context context = getContext();
         File directory = new File(PathUtils.getDataDirectory(context));
@@ -601,6 +606,7 @@ public class CronetUrlRequestContextTest extends CronetTestBase {
 
     @SmallTest
     @Feature({"Cronet"})
+    @OnlyRunNativeCronet
     public void testEnableHttpCacheDisabled() throws Exception {
         enableCache(CronetEngine.Builder.HTTP_CACHE_DISABLED);
         String url = NativeTestServer.getFileURL("/cacheable.txt");
@@ -633,6 +639,7 @@ public class CronetUrlRequestContextTest extends CronetTestBase {
 
     @SmallTest
     @Feature({"Cronet"})
+    @OnlyRunNativeCronet
     public void testEnableHttpCacheDiskNoHttp() throws Exception {
         enableCache(CronetEngine.Builder.HTTP_CACHE_DISABLED);
         String url = NativeTestServer.getFileURL("/cacheable.txt");