Revert 263625 "Set the default ASan options for executables buil..."

Revert 263625 "Set the default ASan options for executables buil..."

Reason for revert: broke all 3 Linux ASan LSan Tests bots:
http://build.chromium.org/p/chromium.memory/builders/Linux%20ASan%20LSan%20Tests%20%281%29/builds/1338
http://build.chromium.org/p/chromium.memory/builders/Linux%20ASan%20LSan%20Tests%20%282%29/builds/1563
http://build.chromium.org/p/chromium.memory/builders/Linux%20ASan%20LSan%20Tests%20%283%29/builds/1796

> Set the default ASan options for executables built with ASan on Linux.
> 
> This is a copy of https://codereview.chromium.org/201153007 and https://codereview.chromium.org/213113002
> updated to the current trunk with more descriptive comments in sanitizer_options.cc and the additional
> legacy_pthread_cond=1 option for the Linux builds.
> 
> 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.
> 
> The default options target is deliberately disabled on 32-bit Chromium OS builds, where one of the host binaries (mksnapshot.ia32) is 32-bit despite host_arch==x86_64.
> 
> GYP changes for OSX and iOS will be committed separately.
> 
> BUG=302040, 341805
> TBR=thakis@chromium.org,mseaborn@chromium.org
> 
> Review URL: https://codereview.chromium.org/230263003

TBR=glider@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=263634

[Ami GONE FROM CHROMIUM, 2014-04-14 15:54:13]

Committed patchset #1 manually as r263634 (tree was closed).