Flip the "unique file:// URI origin" flag to on. Add the...

chrome/test/ui/ui_test.cc

 // Copyright (c) 2006-2009 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 "chrome/test/ui/ui_test.h"
 
 #include <set>
 #include <vector>
 
 #include "app/sql/connection.h"
@@ skipping 1119 matching lines @@
     command_line.AppendSwitch(switches::kDumpHistogramsOnExit);
 
 #ifdef WAIT_FOR_DEBUGGER_ON_OPEN
   command_line.AppendSwitch(switches::kDebugOnStart);
 #endif
 
   if (!ui_test_name_.empty())
     command_line.AppendSwitchWithValue(switches::kTestName,
                                        ui_test_name_);
 
+  // The tests assume that file:// URIs can freely access other file:// URIs.
+  command_line.AppendSwitch(switches::kAllowFileAccessFromFiles);
+
   DebugFlags::ProcessDebugFlags(
       &command_line, ChildProcessInfo::UNKNOWN_PROCESS, false);
   command_line.AppendArguments(arguments, false);
 
   // TODO(phajdan.jr): Only run it for "main" browser launch.
   browser_launch_time_ = TimeTicks::Now();
 
 #if defined(OS_WIN)
   bool started = base::LaunchApp(command_line,
                                  wait,
@@ skipping 336 matching lines @@
     set_ui_test_name(ASCIIToWide(test_name));
   }
   UITestBase::SetUp();
   PlatformTest::SetUp();
 }
 
 void UITest::TearDown() {
   UITestBase::TearDown();
   PlatformTest::TearDown();
 }