Print stack traces in child processes when browser tests failed.

content/common/sandbox_win.cc

Index: content/common/sandbox_win.cc
diff --git a/content/common/sandbox_win.cc b/content/common/sandbox_win.cc
index 7627865c3ed4f7a7daf6a7d3f71df6c252375bae..f475db35e9d36756df28938a41fdfbbeebbec153 100644
--- a/content/common/sandbox_win.cc
+++ b/content/common/sandbox_win.cc
@@ -328,8 +328,8 @@ bool AddGenericPolicy(sandbox::TargetPolicy* policy) {
     return false;
 #endif  // NDEBUG
 
-  // Add the policy for read-only PDB file access for AddressSanitizer.
-#if defined(ADDRESS_SANITIZER)
+  // Add the policy for read-only PDB file access for stack traces.
+#if !defined(OFFICIAL_BUILD)
   base::FilePath exe;
   if (!PathService::Get(base::FILE_EXE, &exe))
     return false;