Move some chrome-specific bits out of InProcessBrowserTest

chrome/browser/errorpage_browsertest.cc

Index: chrome/browser/errorpage_browsertest.cc
diff --git a/chrome/browser/errorpage_browsertest.cc b/chrome/browser/errorpage_browsertest.cc
index 4badd955177c699c79742446e8628517c4861eaa..482bb6738f0aadbb0aa28a6e487529beb651492c 100644
--- a/chrome/browser/errorpage_browsertest.cc
+++ b/chrome/browser/errorpage_browsertest.cc
@@ -2,7 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "base/bind.h"
 #include "base/utf_string_conversions.h"
+#include "chrome/browser/net/url_request_mock_util.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/test/base/in_process_browser_test.h"
@@ -58,6 +60,13 @@ class ErrorPageTest : public InProcessBrowserTest {
                                    HISTORY_NAVIGATE_FORWARD);
   }
 
+ protected:
+  void SetUpOnMainThread() OVERRIDE {
+    BrowserThread::PostTask(
+        BrowserThread::IO, FROM_HERE,
+        base::Bind(&chrome_browser_net::SetUrlRequestMocksEnabled, true));
+  }
+
  private:
   // Navigates the browser the indicated direction in the history and waits for
   // |num_navigations| to occur and the title to change to |expected_title|.