Make chrome.exe built with ASan/Win work with sandbox enabled

content/gpu/gpu_main.cc

 // Copyright (c) 2012 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 <stdlib.h>
 
 #if defined(OS_WIN)
 #include <dwmapi.h>
 #include <windows.h>
 #endif
@@ skipping 503 matching lines @@
 
 #if defined(OS_WIN)
 bool StartSandboxWindows(const sandbox::SandboxInterfaceInfo* sandbox_info) {
   TRACE_EVENT0("gpu", "Lower token");
 
   // For Windows, if the target_services interface is not zero, the process
   // is sandboxed and we must call LowerToken() before rendering untrusted
   // content.
   sandbox::TargetServices* target_services = sandbox_info->target_services;
   if (target_services) {
+#if defined(ADDRESS_SANITIZER)
+    // Bind and leak dbghelp.dll before the token is lowered, otherwise
+    // AddressSanitizer will crash when trying to symbolize a report.
+    if (!LoadLibraryA("dbghelp.dll"))
+      return false;
+#endif
+
     target_services->LowerToken();
     return true;
   }
 
   return false;
 }
 #endif  // defined(OS_WIN)
 
 }  // namespace.
 
 }  // namespace content