Update API name to comply with changes to API

Bug: 17253647

API council requested a change to an API name. This is the
plumbing side of the change.

Change-Id: I12e85c36df9a96c27855d01afddeae586d57d1c1
diff --git a/chromium/java/com/android/webview/chromium/FileChooserParamsAdapter.java b/chromium/java/com/android/webview/chromium/FileChooserParamsAdapter.java
index 24cc06c..44f765b 100644
--- a/chromium/java/com/android/webview/chromium/FileChooserParamsAdapter.java
+++ b/chromium/java/com/android/webview/chromium/FileChooserParamsAdapter.java
@@ -55,7 +55,7 @@
     }
 
     @Override
-    public String getDefaultFilename() {
+    public String getFilenameHint() {
         return mParams.defaultFilename;
     }