Make blink::ResourceRequest ctors explicit

third_party/WebKit/Source/platform/loader/fetch/ResourceRequest.h

Index: third_party/WebKit/Source/platform/loader/fetch/ResourceRequest.h
diff --git a/third_party/WebKit/Source/platform/loader/fetch/ResourceRequest.h b/third_party/WebKit/Source/platform/loader/fetch/ResourceRequest.h
index da9d73c45fbd4e7e03a23c73d8be8de7298d3d75..a3e1fdf2fda4c53efb4a232bb5522623063e0e2f 100644
--- a/third_party/WebKit/Source/platform/loader/fetch/ResourceRequest.h
+++ b/third_party/WebKit/Source/platform/loader/fetch/ResourceRequest.h
@@ -75,8 +75,8 @@ class PLATFORM_EXPORT ResourceRequest final {
   };
 
   ResourceRequest();
-  ResourceRequest(const String& url_string);
-  ResourceRequest(const KURL&);
+  explicit ResourceRequest(const String& url_string);
+  explicit ResourceRequest(const KURL&);
   explicit ResourceRequest(CrossThreadResourceRequestData*);
   ResourceRequest(const ResourceRequest&);
   ResourceRequest& operator=(const ResourceRequest&);