Refactor determineRequestContext() to remove a mutableResourceRequest() call

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

Index: third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.h
diff --git a/third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.h b/third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.h
index 2d33a4d6d1905fea0df213b141ef6d65065fedf2..59ef02a0c5a95ee8ad84103ab4f64f63b2f506af 100644
--- a/third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.h
+++ b/third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.h
@@ -131,10 +131,10 @@ class PLATFORM_EXPORT ResourceFetcher
 
   String getCacheIdentifier() const;
 
-  static void determineRequestContext(ResourceRequest&,
-                                      Resource::Type,
-                                      bool isMainFrame);
-  void determineRequestContext(ResourceRequest&, Resource::Type);
+  WARN_UNUSED_RESULT static WebURLRequest::RequestContext
+  determineRequestContext(Resource::Type, bool isMainFrame);
+  WARN_UNUSED_RESULT WebURLRequest::RequestContext determineRequestContext(
+      Resource::Type) const;
 
   void updateAllImageResourcePriorities();