Add trace events to library loading.

Library loading is costly (especially on low-end devices), but is
absent from traces. This CL fixes that by adding a trace event to
the function that does the loading.

(NOTRY as per advise in crbug.com/736215#c57)
NOTRY=true

Change-Id: I6c7e4d6d39ca91fe5b09105e8e7727718a6f8eab
Reviewed-on: https://chromium-review.googlesource.com/721686
Commit-Queue: Dmitry Skiba <dskiba@chromium.org>
Reviewed-by: agrieve <agrieve@chromium.org>
Reviewed-by: Benoit L <lizeb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#513566}

CrOS-Libchrome-Original-Commit: fabbb7f54fee895d432f7ed6fd32528926739e5b
1 file changed
tree: e143d7790077f6f8069ff566e163f210d574b20f
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/