Snazzier dump log step on Android bots.

Snazzier dump log step on Android bots.

(The failing NexusPlayer bot is a demo.)

This should make stack traces more useful, turning this sort of thing

    09-20 11:29:39.536  2978  2978 F DEBUG   :     #00 pc 00970fd0  /data/local/tmp/dm

into something like this

    09-20 11:29:39.536  2978  2978 F DEBUG   :     #00 pc 00970fd0 adjust_bounds_to_granularity(SkIRect*, SkIRect const&, VkExtent2D const&, int, int) at /b/work/skia/out/Build-Ubuntu-Clang-x86-Debug-GN_Android_Vulkan/Debug/../../../src/gpu/vk/GrVkGpu.cpp:1803  /data/local/tmp/dm

Some bots like the S7 already have good enough stack traces, e.g.

09-20 11:35:12.567   936   936 F DEBUG   :     #00 pc 00000000000bed6c  /system/vendor/lib64/hw/vulkan.msm8996.so (_ZN13QglManagedBuf14ConfirmEntriesEv+108)
09-20 11:35:12.567   936   936 F DEBUG   :     #01 pc 00000000000b098c  /system/vendor/lib64/hw/vulkan.msm8996.so (_ZN9QglBltLib6FillHwEPK10QglBltFillPK15QglBltColorFillPK15QglBltDepthFillPjP12QglBltStatusSB_+588)
09-20 11:35:12.567   936   936 F DEBUG   :     #02 pc 00000000000b23bc  /system/vendor/lib64/hw/vulkan.msm8996.so (_ZN9QglBltLib9FillImageEPK10QglBltFillPK15QglBltColorFillPK15QglBltDepthFillPjP12QglBltStatusSB_+348)
09-20 11:35:12.567   936   936 F DEBUG   :     #03 pc 000000000009bb00  /system/vendor/lib64/hw/vulkan.msm8996.so (_ZN16A5xCommandBuffer22PerformConditionalFillEiiP10QglBltFillPK15QglBltColorFillP15QglBltDepthFillP12QglBltStatusS8_+256)
09-20 11:35:12.567   936   936 F DEBUG   :     #04 pc 000000000009c0c0  /system/vendor/lib64/hw/vulkan.msm8996.so (_ZN16A5xCommandBuffer23HwWriteSubpassInitClearEP10QglBltFillPK15QglBltColorFillP15QglBltDepthFillP12QglBltStatusS8_+224)
09-20 11:35:12.567   936   936 F DEBUG   :     #05 pc 0000000000072610  /system/vendor/lib64/hw/vulkan.msm8996.so (_ZN16QglCommandBuffer18WriteSubpassClearsEv+464)
09-20 11:35:12.567   936   936 F DEBUG   :     #06 pc 0000000000073ae0  /system/vendor/lib64/hw/vulkan.msm8996.so (_ZN16QglCommandBuffer12BeginSubpassEv+32)
09-20 11:35:12.567   936   936 F DEBUG   :     #07 pc 0000000000063120  /system/vendor/lib64/hw/vulkan.msm8996.so (vkCmdBeginRenderPass+224)
09-20 11:35:12.567   936   936 F DEBUG   :     #08 pc 0000000000635f60  /data/local/tmp/nanobench (_ZN24GrVkPrimaryCommandBuffer15beginRenderPassEPK7GrVkGpuPK14GrVkRenderPassjPK12VkClearValueRK16GrVkRenderTargetRK7SkIRectb+132)

or

09-20 11:42:24.557   937   937 F DEBUG   : backtrace:
09-20 11:42:24.557   937   937 F DEBUG   :     #00 pc 0000000000069404  /system/lib64/libc.so (tgkill+8)
09-20 11:42:24.557   937   937 F DEBUG   :     #01 pc 0000000000066b94  /system/lib64/libc.so (pthread_kill+68)
09-20 11:42:24.557   937   937 F DEBUG   :     #02 pc 0000000000023a28  /system/lib64/libc.so (raise+28)
09-20 11:42:24.557   937   937 F DEBUG   :     #03 pc 000000000001e358  /system/lib64/libc.so (abort+60)
09-20 11:42:24.557   937   937 F DEBUG   :     #04 pc 000000000076430c  /data/local/tmp/dm (_Z17sk_abort_no_printv+8)

These won't be affected.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2351243002

NOTREECHECKS=true

Review-Url: https://codereview.chromium.org/2351243002