Suppress deprecation warnings for OS X sandbox functions.

content/common/sandbox_mac.mm

Index: content/common/sandbox_mac.mm
diff --git a/content/common/sandbox_mac.mm b/content/common/sandbox_mac.mm
index 75199b1a3d62491f1d4a70e1e545c1b38b820342..c422bf7f8f2a7874583eb944edbe54edcf04a854 100644
--- a/content/common/sandbox_mac.mm
+++ b/content/common/sandbox_mac.mm
@@ -155,7 +155,10 @@ bool SandboxCompiler::CompileAndApplyProfile(std::string* error) {
   if (sandbox_init_with_parameters(profile_str_.c_str(), 0, params.data(),
                                    &error_internal)) {
     error->assign(error_internal);

[Nico, 2016/03/31 19:50:15]

Can you please add a somewhat detailed comment here why this suppression is
justified? I think this CL is ok, but I don't want unannotated instances of this
suppression in the code base.

+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
     sandbox_free_error(error_internal);
+#pragma clang diagnostic pop
     return false;
   }
   return true;