Make the TestServer use an absolute document root path.

content/browser/browser_plugin/browser_plugin_host_browsertest.cc

 // Copyright (c) 2012 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 "base/command_line.h"
 #include "base/memory/singleton.h"
 #include "base/run_loop.h"
 #include "base/string_split.h"
 #include "base/test/test_timeouts.h"
 #include "base/utf_string_conversions.h"
@@ skipping 449 matching lines @@
   test_guest()->WaitForAdvanceFocus();
 }
 
 // This test opens a page in http and then opens another page in https, forcing
 // a RenderViewHost swap in the web_contents. We verify that the embedder in the
 // web_contents gets cleared properly.
 IN_PROC_BROWSER_TEST_F(BrowserPluginHostTest, EmbedderChangedAfterSwap) {
   net::TestServer https_server(
       net::TestServer::TYPE_HTTPS,
       net::TestServer::kLocalhost,
-      base::FilePath(FILE_PATH_LITERAL("content/test/data")));
+      net::TestServer::GetSourceRelativePath(
+          base::FilePath(FILE_PATH_LITERAL("content/test/data"))));
   ASSERT_TRUE(https_server.Start());
 
   // 1. Load an embedder page with one guest in it.
   const char kEmbedderURL[] = "files/browser_plugin_embedder.html";
   StartBrowserPluginTest(kEmbedderURL, kHTMLForGuest, true, "");
 
   // 2. Navigate to a URL in https, so we trigger a RenderViewHost swap.
   GURL test_https_url(https_server.GetURL(
       "files/browser_plugin_title_change.html"));
   content::WindowedNotificationObserver swap_observer(
@@ skipping 883 matching lines @@
     const string16 expected_title = ASCIIToUTF16("AutoSize(640, 480)");
     content::TitleWatcher title_watcher(test_embedder()->web_contents(),
                                         expected_title);
     RemoveAttributes(rvh, "maxwidth");
     string16 actual_title = title_watcher.WaitAndGetTitle();
     EXPECT_EQ(expected_title, actual_title);
   }
 }
 
 }  // namespace content