Fix LSan on swarming.

base/base.isolate

Index: base/base.isolate
diff --git a/base/base.isolate b/base/base.isolate
index 9813d6a070714eb0218afdf9874feed62b3fb8a0..762d915ee46300873de01da608dc2732fff0441f 100644
--- a/base/base.isolate
+++ b/base/base.isolate
@@ -28,6 +28,14 @@
         'files': [
           '../tools/valgrind/asan/',
           '../third_party/llvm-build/Release+Asserts/bin/llvm-symbolizer',
+          '../third_party/llvm-build/Release+Asserts/lib/libstdc++.so.6',

[M-A Ruel, 2014/10/15 13:07:59]

I assume we don't use asan on ARM so we're fine. We can see in time if this ever
happens.

[earthdok, 2014/10/15 14:11:45]

I don't think you need this dependency. Please see the comment in test_env.py.

[jam, 2014/10/15 15:23:25]

right

[jam, 2014/10/15 15:23:25]

replied there

[earthdok, 2014/10/15 17:00:37]

Maybe I'm misunderstanding. If (according to your reply) you want to use
/usr/lib/x86_64-linux-gnu/debug/libstdc++.so.6 then what's this dependency for?
Is it for llvm-symbolizer?

[jam, 2014/10/15 17:23:49]

sorry my earlier reply was wrong. yes this is needed for symbolizer. without it
I didn't get stack traces.

+        ],
+      },
+    }],
+    ['lsan==1', {
+      'variables': {
+        'files': [
+          '../tools/lsan/suppressions.txt',
         ],
       },
     }],