Fix compiling of google-breakpad with gcc-4.6.
Fix compiling of google-breakpad with gcc-4.6.

Remove an unnecessary "const" that causes an error with the newer gcc.

BUG=chromium-os:14973
TEST=emerge'd google-breakpad.

Change-Id: Id6469b44ecc56f40346a927c737fc1f990b44d87
Reviewed-on: http://gerrit.chromium.org/gerrit/5249
Reviewed-by: asharif <0bffdc695497b480334d6a40467f7e340b20eba1@chromium.org>
Tested-by: Michael Krebs <d6638659c20694b0807ba6fa35ee0bac2e482e0f@chromium.org>
Reviewed-by: Michael Krebs <d6638659c20694b0807ba6fa35ee0bac2e482e0f@chromium.org>

bbcallen/google-breakpad,bbcallen/google-breakpad,Quiark/google-breakpad,mhoran/google-breakpad,Quiark/google-breakpad,Quiark/google-breakpad,bbcallen/google-breakpad,Quiark/google-breakpad,bbcallen/google-breakpad,Quiark/google-breakpad,mhoran/google-breakpad,mhoran/google-breakpad,mhoran/google-breakpad,bbcallen/google-breakpad,bbcallen/google-breakpad,mhoran/google-breakpad,Quiark/google-breakpad,mhoran/google-breakpad