CFI Linux CF: Add flags for better stack traces.

masters/master.chromium.fyi/master.cfg

Index: masters/master.chromium.fyi/master.cfg
diff --git a/masters/master.chromium.fyi/master.cfg b/masters/master.chromium.fyi/master.cfg
index 7034e3ad2d5804987edb97fa1eb8e9255b28ae46..7d1d3ea5d163020eef618d57cc962b7f554a7e7b 100644
--- a/masters/master.chromium.fyi/master.cfg
+++ b/masters/master.chromium.fyi/master.cfg
@@ -1792,7 +1792,9 @@ b_chromium_cfi_linux_cf = {
       'gs_bucket': 'gs://chromium-browser-cfi',
       'gs_acl': 'public-read',
       'gclient_env': {
-        'GYP_DEFINES': 'cfi_vptr=1',
+        'GYP_DEFINES': 'cfi_vptr=1 release_extra_cflags="-O1 '
+          '-fno-inline-function -fno-inline -fno-omit-frame-pointer '

[inferno, 2015/08/13 20:03:58]

1. typo -fno-inline-functions
2. -gline-tables-only shouldn't be needed since it should be defined as part of
cfi_vptr definition.

[pcc1, 2015/08/13 20:13:44]

Done. I was going to revert https://codereview.chromium.org/1289673002 entirely
but I suppose we can keep -gline-tables-only as it won't interfere with perf.

+          '-gline-tables-only"',
         'LLVM_DOWNLOAD_GOLD_PLUGIN': '1',
       },
     }),