Roll src/third_party/perfetto e67138c9836d..a0b94071e6bd (5 commits)

https://android.googlesource.com/platform/external/perfetto.git/+log/e67138c9836d..a0b94071e6bd

git log e67138c9836d..a0b94071e6bd --date=short --no-merges --format='%ad %ae %s'
2019-09-09 primiano@google.com Merge "Fix chrome roll: update protoc host toolchain rules"
2019-09-09 primiano@google.com Clean up headers dependency on inode file scanner
2019-09-09 primiano@google.com Add benchmark for PacketStreamValidator
2019-09-09 primiano@google.com Merge "generators: Remove dependency on protos strutil.h"
2019-09-09 primiano@google.com Merge "Make trace_processor a host-only target"

Created with:
  gclient setdep -r src/third_party/perfetto@a0b94071e6bd

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/perfetto-chromium-autoroll
Please CC perfetto-bugs@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

TBR=perfetto-bugs@google.com

Bug: chromium:140126865,chromium:132880619
Change-Id: Ic05aac584d2ccd16025cfac304ffa1e204f9ec13
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1791419Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#694805}

DEPS

@@ -1246,7 +1246,7 @@ deps = {
   },
 
   'src/third_party/perfetto':
-    Var('android_git') + '/platform/external/perfetto.git' + '@' + 'e67138c9836dda3acd32be27825c3c6ad84dfa75',
+    Var('android_git') + '/platform/external/perfetto.git' + '@' + 'a0b94071e6bd0db3c4ab7740235b9103666a005d',
 
   'src/third_party/perl': {
       'url': Var('chromium_git') + '/chromium/deps/perl.git' + '@' + '6f3e5028eb65d0b4c5fdd792106ac4c84eee1eb3',