linux: Build with -fPIC on all arches but x86 32-bit.
linux: Build with -fPIC on all arches but x86 32-bit.

I will watch the bots to see if this affects performance.

BUG=26625
TEST=compiles

Review URL: http://codereview.chromium.org/3501001

git-svn-id: http://src.chromium.org/svn/trunk/src@61208 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 7c4d42700d31ffcc2a9cb1e9d4e798d327944fbf
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser