[SafeBrowsing] Conditionalize unverified download blocking on whitelist.

third_party/WebKit/public/web/WebFileChooserParams.h

Index: third_party/WebKit/public/web/WebFileChooserParams.h
diff --git a/third_party/WebKit/public/web/WebFileChooserParams.h b/third_party/WebKit/public/web/WebFileChooserParams.h
index eaef311065998ff044d10fc4f093e4c128551c1c..8924f2f73601b80f5e377f4aa368362f0239b17e 100644
--- a/third_party/WebKit/public/web/WebFileChooserParams.h
+++ b/third_party/WebKit/public/web/WebFileChooserParams.h
@@ -32,6 +32,7 @@
 #define WebFileChooserParams_h
 
 #include "../platform/WebString.h"
+#include "../platform/WebURL.h"
 #include "../platform/WebVector.h"
 #include "WebFileChooserCompletion.h"
 
@@ -76,6 +77,9 @@ struct WebFileChooserParams {
     // WebFileChooserCompletion that can handle files without local paths,
     // 'false' should be specified to the flag.
     bool needLocalPath;
+    // If non-empty, represents the URL of the requestor if the request was
+    // initiated by a document.
+    WebURL requestor;
 
     WebFileChooserParams()
         : multiSelect(false)