Reland of http://crrev.com/241548.

chrome_elf/blacklist/test/blacklist_test_dll_3.cc

Index: chrome_elf/blacklist/test/blacklist_test_dll_3.cc
diff --git a/chrome_elf/chrome_elf_main.cc b/chrome_elf/blacklist/test/blacklist_test_dll_3.cc
similarity index 51%
copy from chrome_elf/chrome_elf_main.cc
copy to chrome_elf/blacklist/test/blacklist_test_dll_3.cc
index 4291430970496b6f13d2aec4113c61ce3c86b286..b4a69590e801adf0daf9e14970dc125c422c2bd1 100644
--- a/chrome_elf/chrome_elf_main.cc
+++ b/chrome_elf/blacklist/test/blacklist_test_dll_3.cc
@@ -4,17 +4,11 @@
 
 #include <windows.h>
 
-#include "chrome_elf/chrome_elf_main.h"
-
-#include "chrome_elf/ntdll_cache.h"
-
-void InitChromeElf() {
-  // This method is a no-op which may be called to force a load-time dependency
-  // on chrome_elf.dll.
-}
+const wchar_t kDll3Beacon[] = L"{9E056AEC-169E-400c-B2D0-5A07E3ACE2EB}";
 
 BOOL APIENTRY DllMain(HMODULE module, DWORD reason, LPVOID reserved) {
-  if (reason == DLL_PROCESS_ATTACH)
-    InitCache();
+  if (reason == DLL_PROCESS_ATTACH) {
+    ::SetEnvironmentVariable(kDll3Beacon, L"1");
+  }
   return TRUE;
 }