Support parsing class graphs in Android dependency visualization

The index page has been forked into class/package versions, which are
identical for now but expected to differ more in the future. Although
there is no way to move between class/package graphs via UI controls as
of yet, it is possible to do so by changing the URL manually (ie., go to
class_index.html instead of package_index.html). The UI control to
generate the current URL also works for class graphs.

Bug: 1093962
Change-Id: I725c9107eb04388ef8228b63dc4ec8c6aa28d9e0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2285327
Commit-Queue: James Long <yjlong@google.com>
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Reviewed-by: Samuel Huang <huangs@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#786400}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 3288fafe1126fc1be1f92e667e9c6c6426cf1961
9 files changed