Remove --enable-apps-file-associations flag.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 92049d87610d170e1bd521494cc6fcf09e89d372..4165303c59bc81edc7e515fdc5fbd1584a08da8d 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -6715,12 +6715,6 @@ Keep your key file in a safe place. You will need it to create new versions of y
         Use bleeding-edge code to make Chrome draw content faster. The changes
         behind this path are very likely to break lots of content.
       </message>
-      <message name="IDS_FLAGS_APPS_FILE_ASSOCIATIONS_NAME" desc="Name for file associations for Chrome Apps.">
-        Apps file associations
-      </message>
-      <message name="IDS_FLAGS_APPS_FILE_ASSOCIATIONS_DESCRIPTION" desc="Description for a flag to enable file associations for Chrome Apps.">
-        Enable OS integration of file associations for Chrome Apps.
-      </message>
       <message name="IDS_FLAGS_HARFBUZZ_RENDERTEXT_NAME" desc="Name of the about:flags HarfBuzz RenderText experiment.">
         HarfBuzz for UI text
       </message>