linux_aura: Attempt to green the official builder by reverting unwind support.

linux_aura: Attempt to green the official builder by reverting unwind support.

This effectively reverts in r243919 and r244331 in a desperate attempt
to fix the tree.

Build fail output:

FAILED: cd ../../chrome; flock -- /tmp/linux_package_lock bash ../out/Release/installer/rpm/build.sh -o../out/Release -b ../out/Release -a ia32 -c beta
Staging common install files in '/tmp/rpm.build.XtJRbJ'...
eu-strip: while computing checksum for debug information: Invalid argument
FAILED: cd ../../chrome; flock -- /tmp/linux_package_lock bash ../out/Release/installer/rpm/build.sh -o../out/Release -b ../out/Release -a ia32 -c unstable
Staging common install files in '/tmp/rpm.build.t4jNp4'...
eu-strip: while computing checksum for debug information: Invalid argument
FAILED: cd ../../chrome; flock -- /tmp/linux_package_lock bash ../out/Release/installer/debian/build.sh -o../out/Release -b ../out/Release -a ia32 -c unstable
Staging common install files in '/tmp/deb.build.CxnH9l'...
eu-strip: while computing checksum for debug information: Invalid argument
Cleaning...
FAILED: cd ../../chrome; flock -- /tmp/linux_package_lock bash ../out/Release/installer/debian/build.sh -o../out/Release -b ../out/Release -a ia32 -c stable
Staging common install files in '/tmp/deb.build.9Zyie1'...
eu-strip: while computing checksum for debug information: Invalid argument
Cleaning...
FAILED: cd ../../chrome; flock -- /tmp/linux_package_lock bash ../out/Release/installer/debian/build.sh -o../out/Release -b ../out/Release -a ia32 -c beta
Staging common install files in '/tmp/deb.build.xUB39X'...
eu-strip: while computing checksum for debug information: Invalid argument
Cleaning...
FAILED: cd ../../chrome; flock -- /tmp/linux_package_lock bash ../out/Release/installer/rpm/build.sh -o../out/Release -b ../out/Release -a ia32 -c stable
Staging common install files in '/tmp/rpm.build.aN0PGV'...
eu-strip: while computing checksum for debug information: Invalid argument
../out/Release/chrome, section '.eh_frame': the call frame entry at offset 0x18 uses a DWARF expression to describe how to recover register '.cfa',  but this translator cannot yet translate DWARF expressions to Breakpad postfix expressions
ninja: build stopped: subcommand failed.

BUG=180975
TBR=spang@chromium.org, stip@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=245421

[Elliot Glaysher, 2014-01-17 04:07:26]

Committed patchset #1 manually as r245421 (tree was closed).

[Elliot Glaysher, 2014-01-17 06:01:56]

A revert of this CL has been created in
https://codereview.chromium.org/141273005/ by erg@chromium.org.

The reason for reverting is: Didn't actually help with the build failures on
Google Chrome Linux..