Fix Cronet compilation and test errors.

components/cronet/android/url_request_adapter.cc

Index: components/cronet/android/url_request_adapter.cc
diff --git a/components/cronet/android/url_request_adapter.cc b/components/cronet/android/url_request_adapter.cc
index 4b0b38dbb708cfab42bb90287b869156cfbc1443..2e40945e5ccaae8315014ab9dd067abb132194e6 100644
--- a/components/cronet/android/url_request_adapter.cc
+++ b/components/cronet/android/url_request_adapter.cc
@@ -25,7 +25,6 @@ URLRequestAdapter::URLRequestAdapter(URLRequestContextAdapter* context,
                                      GURL url,
                                      net::RequestPriority priority)
     : method_("GET"),
-      url_request_(NULL),
       read_buffer_(new net::GrowableIOBuffer()),
       bytes_read_(0),
       total_bytes_read_(0),
@@ -121,8 +120,8 @@ void URLRequestAdapter::OnInitiateConnection() {
   VLOG(1) << "Starting chromium request: "
           << url_.possibly_invalid_spec().c_str()
           << " priority: " << RequestPriorityToString(priority_);
-  url_request_ = new net::URLRequest(
-      url_, net::DEFAULT_PRIORITY, this, context_->GetURLRequestContext());
+  url_request_ = context_->GetURLRequestContext()->CreateRequest(
+      url_, net::DEFAULT_PRIORITY, this, NULL);
   url_request_->SetLoadFlags(net::LOAD_DISABLE_CACHE |
                              net::LOAD_DO_NOT_SAVE_COOKIES |
                              net::LOAD_DO_NOT_SEND_COOKIES);
@@ -281,10 +280,7 @@ void URLRequestAdapter::OnRequestCanceled() {
 
 void URLRequestAdapter::OnRequestCompleted() {
   VLOG(1) << "Completed: " << url_.possibly_invalid_spec();
-  if (url_request_ != NULL) {
-    delete url_request_;
-    url_request_ = NULL;
-  }
+  url_request_.reset();
 
   delegate_->OnBytesRead(this);
   delegate_->OnRequestFinished(this);