Added unpacking step

chrome/installer/mac/app/testing/OmahaXMLRequest_test.mm

Index: chrome/installer/mac/app/testing/OmahaXMLRequest_test.mm
diff --git a/chrome/installer/mac/app/testing/OmahaXMLRequest_test.mm b/chrome/installer/mac/app/testing/OmahaXMLRequest_test.mm
index a0f285ef7cc94dd0c5d7fd28796790d541c889f2..fc50f6b7c3644b051f62ed7f8202fd6223dd41ec 100644
--- a/chrome/installer/mac/app/testing/OmahaXMLRequest_test.mm
+++ b/chrome/installer/mac/app/testing/OmahaXMLRequest_test.mm
@@ -4,8 +4,12 @@
 
 #import "chrome/installer/mac/app/OmahaXMLRequest.h"
 
+#include "base/base_paths.h"
+#include "base/files/file_path.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/macros.h"
+#include "base/path_service.h"
+#include "base/strings/sys_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
@@ -15,10 +19,10 @@ TEST(OmahaXMLRequestTest, CreateReturnsValidXML) {
       [OmahaXMLRequest createXMLRequestBody]);
   ASSERT_TRUE(xml_body_);
 
-  NSString* requestDTDLocation = [[[[NSBundle mainBundle] bundlePath]
-      stringByAppendingPathComponent:
-          @"../../chrome/installer/mac/app/testing/requestCheck.dtd"]
-      stringByResolvingSymlinksInPath];
+  base::FilePath path;
+  PathService::Get(base::DIR_SOURCE_ROOT, &path);
+  path = path.AppendASCII("chrome/test/data/mac_installer/requestCheck.dtd");
+  NSString* requestDTDLocation = base::SysUTF8ToNSString(path.value());
   NSData* requestDTDData = [NSData dataWithContentsOfFile:requestDTDLocation];
   ASSERT_TRUE(requestDTDData);