[sync] Add model type counters to memory dumps.

[sync] Add model type counters to memory dumps.

crbug.com/675682 reported that in some rare cases sync uses enormous
amounts of memory. To correlate memory usage with size of user's profile,
this CL adds model type counters to memory dumps.

BUG=675683
Review-Url: https://codereview.chromium.org/2651563004
Cr-Commit-Position: refs/heads/master@{#445795}
Committed: https://chromium.googlesource.com/chromium/src/+/65f48321e20afaa5ac2f11a2546cf33e791fe570

[DmitrySkiba, 2017-01-23 19:53:12]

dskiba@chromium.org changed reviewers:
+ pavely@chromium.org

[DmitrySkiba, 2017-01-23 19:53:12]

Example dump:

sync
  0xD7364A90
    kernel                            2,437.9 KiB
    store                             57.3 KiB
    model_type
      APP                             0
      APP_LIST                        0
      APP_NOTIFICATION                0
      APP_SETTING                     0
      ARC_PACKAGE                     0
      ARTICLE                         0
      AUTOFILL                        120
      AUTOFILL_PROFILE                3
      AUTOFILL_WALLET                 5
      BOOKMARK                        366
      DEVICE_INFO                     16
      DICTIONARY                      0
      EXPERIMENTS                     2
      EXTENSION                       0
      EXTENSION_SETTING               0
      FAVICON_IMAGE                   207
      FAVICON_TRACKING                207
      HISTORY_DELETE_DIRECTIVE        1
      MANAGED_USER                    0
      MANAGED_USER_SETTING            0
      MANAGED_USER_SHARED_SETTING     0
      MANAGED_USER_WHITELIST          0
      NIGORI                          1
      PASSWORD                        38
      PREFERENCE                      49
      PRINTER                         0
      PRIORITY_PREFERENCE             6
      READING_LIST                    0
      SEARCH_ENGINE                   0
      SESSION                         65
      SYNCED_NOTIFICATION             0
      SYNCED_NOTIFICATION_APP_INFO    0
      THEME                           0
      TYPED_URL                       299
      WALLET_METADATA                 5
      WIFI_CREDENTIAL                 0

[pavely, 2017-01-24 18:54:33]

lgtm

[DmitrySkiba, 2017-01-24 19:00:08]

The CQ bit was checked by dskiba@chromium.org

[commit-bot: I haz the power, 2017-01-24 19:01:04]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-01-24 20:39:45]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1485284408943840, "parent_rev":
"2e66272e7f9804a92c61c1537574e2a109766ced", "commit_rev":
"65f48321e20afaa5ac2f11a2546cf33e791fe570"}

[commit-bot: I haz the power, 2017-01-24 20:40:49]

Description was changed from

==========
[sync] Add model type counters to memory dumps.

crbug.com/675682 reported that in some rare cases sync uses enormous
amounts of memory. To correlate memory usage with size of user's profile,
this CL adds model type counters to memory dumps.

BUG=675683
==========

to

==========
[sync] Add model type counters to memory dumps.

crbug.com/675682 reported that in some rare cases sync uses enormous
amounts of memory. To correlate memory usage with size of user's profile,
this CL adds model type counters to memory dumps.

BUG=675683

Review-Url: https://codereview.chromium.org/2651563004
Cr-Commit-Position: refs/heads/master@{#445795}
Committed:
https://chromium.googlesource.com/chromium/src/+/65f48321e20afaa5ac2f11a2546c...
==========

[commit-bot: I haz the power, 2017-01-24 20:40:50]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/65f48321e20afaa5ac2f11a2546c...