Call setUseMobileViewportStyle before setViewportEnabled

content/browser/resource_loading_browsertest.cc

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <stdlib.h>
+
+#include "content/public/test/browser_test_utils.h"
+#include "content/public/test/content_browser_test.h"
+#include "content/public/test/content_browser_test_utils.h"
+#include "content/public/test/test_navigation_observer.h"
+#include "content/shell/browser/shell.h"
+
+namespace content {
+
+class ResourceLoadingBrowserTest : public ContentBrowserTest  {
+};
+
+const char kResourceLoadingNonMobilePage[] =
+    "files/resource_loading/resource_loading_non_mobile.html";
+IN_PROC_BROWSER_TEST_F(ResourceLoadingBrowserTest,
+  ResourceLoadingAvoidDoubleDownloads) {
+  ASSERT_TRUE(test_server()->Start());
+  GURL url = test_server()->GetURL(kResourceLoadingNonMobilePage);
+  NavigateToURL(shell(), url);
+  int data = -1;
+  EXPECT_TRUE(ExecuteScriptAndExtractInt(shell()->web_contents(),
+    "getResourceNumber()", &data));
+  EXPECT_EQ(1, data);
+}
+
+} // namespace content
+