Upgrade Blink to milliseconds-based last modified filetimes, part 3.

Source/web/WebFileChooserCompletionImpl.cpp

Index: Source/web/WebFileChooserCompletionImpl.cpp
diff --git a/Source/web/WebFileChooserCompletionImpl.cpp b/Source/web/WebFileChooserCompletionImpl.cpp
index 3a1f4b3743133a522f5bd50315ba949eb2a4ebc3..49948fafd426deb391f3f558f5abbde785ffe289 100644
--- a/Source/web/WebFileChooserCompletionImpl.cpp
+++ b/Source/web/WebFileChooserCompletionImpl.cpp
@@ -31,6 +31,7 @@
 #include "config.h"
 #include "web/WebFileChooserCompletionImpl.h"
 #include "platform/FileMetadata.h"
+#include "wtf/DateMath.h"
 
 namespace blink {
 
@@ -61,7 +62,7 @@ void WebFileChooserCompletionImpl::didChooseFile(const WebVector<SelectedFileInf
             fileInfo.append(FileChooserFileInfo(files[i].path, files[i].displayName));
         } else {
             FileMetadata metadata;
-            metadata.modificationTime = files[i].modificationTime;
+            metadata.modificationTimeMS = files[i].modificationTime * msPerSecond;
             metadata.length = files[i].length;
             metadata.type = files[i].isDirectory ? FileMetadata::TypeDirectory : FileMetadata::TypeFile;
             fileInfo.append(FileChooserFileInfo(files[i].fileSystemURL, metadata));