Linux: work around broken dlsym's.

Linux: work around broken dlsym's.

It appears that Nvidia's libGL.so is overriding dlopen/dlsym with
versions that don't fully function. So far, all the users reporting
this have been running Gentoo, but it might just be that they have
up-to-date drivers. The report[1] suggests that all drivers >= 180
have this issue.

[1] http://www.nvnews.net/vbulletin/showthread.php?t=132259

BUG=16800

[Evan Martin, 2009-09-08 22:26:16]

LGTM, one comment below

http://codereview.chromium.org/201055/diff/2001/2002
File chrome/browser/zygote_main_linux.cc (right):

http://codereview.chromium.org/201055/diff/2001/2002#newcode284
Line 284: static void WarnOnceAboutBrokenDlsym() {
comment above this?  based on where you put it, you'd expect the above comments
to describe it but they describe the localtime_r stuff that follows

[agl, 2009-09-08 22:30:06]

http://codereview.chromium.org/201055/diff/2001/2002
File chrome/browser/zygote_main_linux.cc (right):

http://codereview.chromium.org/201055/diff/2001/2002#newcode284
Line 284: static void WarnOnceAboutBrokenDlsym() {
On 2009/09/08 22:26:16, Evan Martin wrote:
> comment above this?  based on where you put it, you'd expect the above
comments
> to describe it but they describe the localtime_r stuff that follows

Good point. I'll move the function now and comment, referencing the first
callsite.