Upgrade Blink to milliseconds-based last modified filetimes, part 5.

public/platform/WebFileInfo.h

Index: public/platform/WebFileInfo.h
diff --git a/public/platform/WebFileInfo.h b/public/platform/WebFileInfo.h
index 3e78971589834cafa9437104ed0fa4bb04f54214..6cdc125c2089b66bcb30079f1f72fce979787401 100644
--- a/public/platform/WebFileInfo.h
+++ b/public/platform/WebFileInfo.h
@@ -36,15 +36,12 @@
 namespace blink {
 
 struct WebFileInfo {
-    // The last modification time of the file, in seconds since Epoch,
+    // The last modification time of the file, in milliseconds since Epoch,
     // with a quiet NaN value representing "not known."
-    // FIXME: change to be milliseconds-based once the transition to a
-    // WebFileInfo with milliseconds-based modification is complete.
     double modificationTime;
 
-    // The last modification time of the file, in milliseconds since Epoch,
-    // with a quiet NaN value representing "not known."
-    // FIXME: remove once the milliseconds transition is complete.
+    // FIXME: unused, remove once embedder has stopped updating (and expecting)
+    // this field.
     double modificationTimeMS;
 
     // The length of the file in bytes.