[Chromecast] Add /system/chrome to the rpath for component builds.

[Chromecast] Add /system/chrome to the rpath for component builds.

We recently hit a corner case on the component build from the following
dependency structure:
  /chrome/crash_uploader ("//chromecast/crash:crash_uploader") ->
  /chrome/lib/libcast_reboot_1.0.so ("//chromecast/system/reboot") ->
  /chrome/libnet.so ("//net")

In libcast_reboot_1.0.so's RPATH, $ORIGIN resolves to /chrome/lib,
meaning that it never searches /chrome/ for libnet.so, causing it to
crash. Explicitly adding the location of component libs to the RPATH
solves this issue.

Note: The RPATH will not be changed in production builds, which do not
use the component build.

BUG=

Change-Id: I0646a063ad787d3fe846fd0755f7f84a4cb6033b
Review-Url: https://codereview.chromium.org/2686903002
Cr-Commit-Position: refs/heads/master@{#449130}
Committed: https://chromium.googlesource.com/chromium/src/+/3301fc1e1974b51ccb59f24519de0dcde34b9333

[slan, 2017-02-08 21:06:40]

slan@chromium.org changed reviewers:
+ bcf@chromium.org, dpranke@chromium.org, halliwell@chromium.org

[slan, 2017-02-08 21:06:40]

+Dirk for OWNERS

[Dirk Pranke, 2017-02-08 21:25:17]

lgtm

[bcf, 2017-02-08 21:28:05]

lgtm

[slan, 2017-02-08 21:28:42]

The CQ bit was checked by slan@chromium.org

[commit-bot: I haz the power, 2017-02-08 21:29:40]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-02-08 23:14:07]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1486589322193150, "parent_rev":
"47901cb48a2298ec86d7bfe73411f5094065c7ed", "commit_rev":
"3301fc1e1974b51ccb59f24519de0dcde34b9333"}

[commit-bot: I haz the power, 2017-02-08 23:14:45]

Description was changed from

==========
[Chromecast] Add /system/chrome to the rpath for component builds.

We recently hit a corner case on the component build from the following
dependency structure:
  /chrome/crash_uploader ("//chromecast/crash:crash_uploader") ->
  /chrome/lib/libcast_reboot_1.0.so ("//chromecast/system/reboot") ->
  /chrome/libnet.so ("//net")

In libcast_reboot_1.0.so's RPATH, $ORIGIN resolves to /chrome/lib,
meaning that it never searches /chrome/ for libnet.so, causing it to
crash. Explicitly adding the location of component libs to the RPATH
solves this issue.

Note: The RPATH will not be changed in production builds, which do not
use the component build.

BUG=

Change-Id: I0646a063ad787d3fe846fd0755f7f84a4cb6033b
==========

to

==========
[Chromecast] Add /system/chrome to the rpath for component builds.

We recently hit a corner case on the component build from the following
dependency structure:
  /chrome/crash_uploader ("//chromecast/crash:crash_uploader") ->
  /chrome/lib/libcast_reboot_1.0.so ("//chromecast/system/reboot") ->
  /chrome/libnet.so ("//net")

In libcast_reboot_1.0.so's RPATH, $ORIGIN resolves to /chrome/lib,
meaning that it never searches /chrome/ for libnet.so, causing it to
crash. Explicitly adding the location of component libs to the RPATH
solves this issue.

Note: The RPATH will not be changed in production builds, which do not
use the component build.

BUG=

Change-Id: I0646a063ad787d3fe846fd0755f7f84a4cb6033b
Review-Url: https://codereview.chromium.org/2686903002
Cr-Commit-Position: refs/heads/master@{#449130}
Committed:
https://chromium.googlesource.com/chromium/src/+/3301fc1e1974b51ccb59f24519de...
==========

[commit-bot: I haz the power, 2017-02-08 23:14:46]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/3301fc1e1974b51ccb59f24519de...