[Autofill] Guard against the initialization failure of ICU Collator.

components/autofill/core/common/autofill_l10n_util.h

Index: components/autofill/core/common/autofill_l10n_util.h
diff --git a/components/autofill/core/common/autofill_l10n_util.h b/components/autofill/core/common/autofill_l10n_util.h
index 099eb3afb499ce17a65c986171b9ad4b85b42b1a..644c4e1e062e975a992aed2a869c447440b7a60a 100644
--- a/components/autofill/core/common/autofill_l10n_util.h
+++ b/components/autofill/core/common/autofill_l10n_util.h
@@ -4,6 +4,7 @@
 
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
+#include "third_party/icu/source/common/unicode/locid.h"
 #include "third_party/icu/source/i18n/unicode/coll.h"
 
 namespace autofill {
@@ -13,6 +14,8 @@ namespace l10n {
 class CaseInsensitiveCompare {
  public:
   CaseInsensitiveCompare();
+  // Used for testing.
+  explicit CaseInsensitiveCompare(const icu::Locale& locale);
   ~CaseInsensitiveCompare();
 
   bool StringsEqual(const base::string16& lhs, const base::string16& rhs) const;