Revert "Add MemoryDumpProvider for DnsConfigServicePosix::HostsReader"

This reverts commit dacc1537d0973365e5d04b49ea014f045712c4b6.

Reason for revert: This instrumentation was added to investigate a bug which is now resolved.

Original change's description:
> Add MemoryDumpProvider for DnsConfigServicePosix::HostsReader
> 
> There are cases of huge numbers of allocations by the HostsReader, which
> are probably caused by devices with huge hosts files. This memory dump
> provider checks the number of hosts entries and the size of the hosts
> file on the device to confirm.
> 
> Bug: 772538
> Cq-Include-Trybots: master.tryserver.chromium.android:android_cronet_tester;master.tryserver.chromium.mac:ios-simulator-cronet
> Change-Id: Id241e62c8f8b63599f0459fbb6537d94fcfb61f9
> Reviewed-on: https://chromium-review.googlesource.com/757063
> Commit-Queue: Miriam Gershenson <mgersh@chromium.org>
> Reviewed-by: Siddhartha S <ssid@chromium.org>
> Reviewed-by: Helen Li <xunjieli@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#515247}

TBR=mgersh@chromium.org,xunjieli@chromium.org,ssid@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 772538
Change-Id: I3201a5cccb3fb508561465d2b465e033a2278c61
Cq-Include-Trybots: master.tryserver.chromium.android:android_cronet_tester;master.tryserver.chromium.mac:ios-simulator-cronet
Reviewed-on: https://chromium-review.googlesource.com/854332
Reviewed-by: Miriam Gershenson <mgersh@chromium.org>
Reviewed-by: Helen Li <xunjieli@chromium.org>
Commit-Queue: Miriam Gershenson <mgersh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#527659}

CrOS-Libchrome-Original-Commit: 83ad9e055e865d78efd5777811dc50aca36d6a60
1 file changed
tree: c3d9006a5f8b527f333f42620bfa2681e1157059
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/