Add README explaining how to build WebView.

Explain how to build WebView now that building it as part of AOSP is no
longer supported, and document the build settings used to produce the
current prebuilts.

Bug: 22593928
Change-Id: I4c59a19eff86f1b2ad742a3df56e82e067872864
1 file changed
tree: a922268d7c9f72d7acfeb34662aba996efbd844a
  1. Android.mk
  2. CleanSpec.mk
  3. README
  4. prebuilt/