[Reland] Use llvm symbolizer for stack script. llvm symbolizer is a more efficient symbolizer than addr2line, objdump, etc. In this cl, I 1)created a wrapper instance to interact with llvm symbolizer, 2)made the stack script to use llvm symbolizer instance, and then 3)added llvm symbolizer into isolated inputs. Bug: 774267 Change-Id: I43d305b4c0c94be614ee4cad35b40f04b3d3ae20 Reviewed-on: https://chromium-review.googlesource.com/810007 Reviewed-by: John Budorick <jbudorick@chromium.org> Reviewed-by: agrieve <agrieve@chromium.org> Reviewed-by: Dirk Pranke <dpranke@chromium.org> Commit-Queue: Zhiling Huang <hzl@chromium.org> Cr-Original-Commit-Position: refs/heads/master@{#522520} Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src Cr-Mirrored-Commit: b2754af2ed37b2bf30efac6234fcecbdd941c4bb1 file changed
