Remove use of PRODUCT_STRING_PATH in chrome_elf.

chrome_elf/blacklist/test/blacklist_test.cc

Index: chrome_elf/blacklist/test/blacklist_test.cc
diff --git a/chrome_elf/blacklist/test/blacklist_test.cc b/chrome_elf/blacklist/test/blacklist_test.cc
index a85f27efd43f3af87780a938f38578cf31d62c86..ef7d6078d5cf46951b1c87e557f3c61bfb4017d9 100644
--- a/chrome_elf/blacklist/test/blacklist_test.cc
+++ b/chrome_elf/blacklist/test/blacklist_test.cc
@@ -20,6 +20,7 @@
 #include "base/test/test_reg_util_win.h"
 #include "base/win/registry.h"
 #include "chrome/common/chrome_version.h"
+#include "chrome/install_static/install_util.h"
 #include "chrome_elf/blacklist/blacklist.h"
 #include "chrome_elf/chrome_elf_constants.h"
 #include "chrome_elf/nt_registry/nt_registry.h"
@@ -191,7 +192,9 @@ class BlacklistTest : public testing::Test {
 
     blacklist_registry_key_.reset(
         new base::win::RegKey(HKEY_CURRENT_USER,
-                              blacklist::kRegistryBeaconPath,
+                              install_static::GetRegistryPath()
+                                  .append(blacklist::kRegistryBeaconKeyName)
+                                  .c_str(),
                               KEY_QUERY_VALUE | KEY_SET_VALUE));
 
     // Find out how many dlls were blocked before the test starts.