Fix crash in TestingProfile if delete fails.

chrome/test/base/testing_profile.cc

Index: chrome/test/base/testing_profile.cc
diff --git a/chrome/test/base/testing_profile.cc b/chrome/test/base/testing_profile.cc
index c43d29fdee2dbfb04d59119c832b39124fcdedb7..d7855ee2c2ec9f6b54948ce19ccb24d75e310d2b 100644
--- a/chrome/test/base/testing_profile.cc
+++ b/chrome/test/base/testing_profile.cc
@@ -566,7 +566,12 @@ TestingProfile::~TestingProfile() {
   }
 
   base::ThreadRestrictions::ScopedAllowIO allow_io;
-  ignore_result(temp_dir_.Delete());
+  if (!temp_dir_.Delete()) {
+    LOG(WARNING) << "Failed to delete temporary directory.";
+    // Make sure |temp_dir_| no longer owns the directory (so it does not try to
+    // delete it in a context where IO is not allowed).
+    ignore_result(temp_dir_.Take());
+  }
 }
 
 void TestingProfile::CreateFaviconService() {