Implement 'window.isSecureContext'.

third_party/WebKit/Source/core/html/forms/FileInputType.cpp

Index: third_party/WebKit/Source/core/html/forms/FileInputType.cpp
diff --git a/third_party/WebKit/Source/core/html/forms/FileInputType.cpp b/third_party/WebKit/Source/core/html/forms/FileInputType.cpp
index db3d2ffcb1fe86b513f69d490a1aa741418a7908..c672cb28691b155f4af8fa0b2cf5692e9e0ff0e4 100644
--- a/third_party/WebKit/Source/core/html/forms/FileInputType.cpp
+++ b/third_party/WebKit/Source/core/html/forms/FileInputType.cpp
@@ -242,12 +242,12 @@ FileList* FileInputType::createFileList(const Vector<FileChooserFileInfo>& files
 
 void FileInputType::countUsage()
 {
-    // It is required by isPrivilegedContext() but isn't
+    // It is required by isSecureContext() but isn't
     // actually used. This could be used later if a warning is shown in the
     // developer console.
     String insecureOriginMsg;
     Document* document = &element().document();
-    if (document->isPrivilegedContext(insecureOriginMsg))
+    if (document->isSecureContext(insecureOriginMsg))
         UseCounter::count(*document, UseCounter::InputTypeFileInsecureOrigin);
     else
         UseCounter::count(*document, UseCounter::InputTypeFileSecureOrigin);