Un-DCHECK-guard ThreadRestrictionVerifier for strings.

third_party/WebKit/Source/wtf/ThreadRestrictionVerifier.h

Index: third_party/WebKit/Source/wtf/ThreadRestrictionVerifier.h
diff --git a/third_party/WebKit/Source/wtf/ThreadRestrictionVerifier.h b/third_party/WebKit/Source/wtf/ThreadRestrictionVerifier.h
index 5af787c33be67398929fa4470e76aed9070c09f7..a8b6150735540af06064eee1a25b2af2dbe898f1 100644
--- a/third_party/WebKit/Source/wtf/ThreadRestrictionVerifier.h
+++ b/third_party/WebKit/Source/wtf/ThreadRestrictionVerifier.h
@@ -33,7 +33,9 @@
 
 #include "wtf/Assertions.h"
 
-#if DCHECK_IS_ON()
+// TODO(meade): Revert this by 17 Mar 17.
+// This is for investigating crbug.com/694520
+// #if DCHECK_IS_ON()
 
 #include "wtf/Threading.h"
 
@@ -104,5 +106,5 @@ class ThreadRestrictionVerifier {
 
 }  // namespace WTF
 
-#endif  // DCHECK_IS_ON()
+// #endif  // DCHECK_IS_ON()
 #endif  // ThreadRestrictionVerifier_h