tree 13508be4d18f9354882883d891594b77ec597ece
parent 769f15d9f550a40657e0cde84a66fb199a22b9ef
author Yuke Liao <liaoyuke@chromium.org> 1515196148 -0800
committer Commit Bot <commit-bot@chromium.org> 1515429974 +0000

[GN] Implements analyzing dependencies between items.

The goal of this CL is to teach GN analyzer to handle build files.

Previous CL:
https://chromium-review.googlesource.com/c/chromium/src/+/838220
implemented tracking build dependency files for each item that
participates in the build dependency tree.

This CL implements analyzing the dependencies between items so as
to recursively decide the set of items/targets that are either
directly or indirectly affected by a list of modified source files
(including build files).

This CL also writes unit tests to verify the new behaviors.

Bug: 795913
Change-Id: I5c123180183246f719248415cdc496a154b5e754
Reviewed-on: https://chromium-review.googlesource.com/851080
Commit-Queue: Yuke Liao <liaoyuke@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#527646}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: da71ef3911f81a7453ea8da4297c0eba9c308748