Set the default ASan options for executables built with ASan on Linux.

Set the default ASan options for executables built with ASan on Linux.

This is a copy of https://codereview.chromium.org/25687005/ updated for the current trunk
with the link_dependency attribute speculatively added to base/base.gyp:sanitizer_options
to avoid potential dependency cycles.

This CL introduces a module, base/debug/sanitizer_options.cc, which will override
the defaults for various dynamic tools (only ASan at this moment). For every executable
built with a dynamic tool this module will be linked into that executable, providing
weak functions to be called by the tool.

The existing declaration of __asan_default_options() in chrome/app/chrome_exe_main_gtk.cc
has been moved into sanitizer_options.cc (now every binary built with GOOGLE_CHROME_BUILD=1
will have the same options as google-chrome-asan.
The existing declaration of __asan_default_options() in chrome/nacl/nacl_helper_linux.cc
has been kept as is, but we had to remove -Wl,-u_sanitizer_options_link_helper to avoid picking sanitizer_options.cc.

GYP changes for OSX and iOS will be committed separately.

BUG=302040
TBR=thakis@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=259561

[Alexander Potapenko, 2014-03-25 19:47:59]

PTAL

[Alexander Potapenko, 2014-03-26 09:24:11]

Landing with TBR, this had been reviewed already and has been modified only
slightly.

[Alexander Potapenko, 2014-03-26 09:24:23]

The CQ bit was checked by glider@chromium.org

[commit-bot: I haz the power, 2014-03-26 09:24:40]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/glider@chromium.org/201153007/60001

[commit-bot: I haz the power, 2014-03-26 12:52:39]

Change committed as 259561

[Nico, 2014-03-26 15:54:03]

lgtm

https://codereview.chromium.org/201153007/diff/60001/components/nacl.gyp
File components/nacl.gyp (right):

https://codereview.chromium.org/201153007/diff/60001/components/nacl.gyp#newc...
components/nacl.gyp:192: # base/debug/sanitizer_options.cc to avoid th conflict
with
s/ th / a /

[tkent, 2014-03-27 11:40:33]

A revert of this CL has been created in
https://codereview.chromium.org/212793010/ by tkent@chromium.org.

The reason for reverting is: Broke ChromiumOS ASan build.

http://build.chromium.org/p/chromium.memory/builders/Chromium%20OS%20%28x86%2...
.