Hack to make tests work if out is a symlink: see if the current dir is the source root.

chrome/test/page_cycler/page_cycler_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 "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/eintr_wrapper.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
@@ skipping 162 matching lines @@
 #endif
     UITest::SetUp();
   }
 
   // For HTTP tests, the name must be safe for use in a URL without escaping.
   void RunPageCycler(const char* name, std::wstring* pages,
                      std::string* timings, bool use_http) {
 
     // Make sure the test data is checked out
     FilePath test_path;
-    PathService::Get(base::DIR_EXE, &test_path);
-    test_path = test_path.DirName();
-    test_path = test_path.DirName();
+    PathService::Get(base::DIR_SOURCE_ROOT, &test_path);
     test_path = test_path.Append(FILE_PATH_LITERAL("data"));
     test_path = test_path.Append(FILE_PATH_LITERAL("page_cycler"));
     test_path = test_path.AppendASCII(name);
     ASSERT_TRUE(file_util::PathExists(test_path)) << "Missing test data";
 
 #if defined(OS_MACOSX)
     PopulateUBC(test_path);
 #endif
 
     GURL test_url;
@@ skipping 324 matching lines @@
 
 TEST_F(PageCyclerTest, BloatHttp) {
   RunTest("bloat", true);
 }
 
 TEST_F(PageCyclerReferenceTest, BloatHttp) {
   RunTest("bloat", true);
 }
 
 }  // namespace