Disable building the APK when a prebuilt is in use.

If the product is configured to use a prebuilt webview APK, don't
attempt to build it from source to avoid a duplicate definition.

Bug: 16870861
Change-Id: I689cda55ef75c843bca2aa020df1b4cefd8821dc
1 file changed
tree: ec07f4db6a8df3f2f8337f88bb61edd46f1d65c8
  1. Android.mk
  2. chromium/
  3. nullwebview/