IndexedDB: Make getAll() requests fail if result exceeds IPC limits

IndexedDB: Make getAll() requests fail if result exceeds IPC limits

The (experimental) IDBObjectStore/IDBIndex.getAll()/getAllKeys()
methods can return an arbitrary number of results. When the resulting
payload would exceed the IPC message, fail the request with an
UnknownError per discussion w/ Moz.

BUG=478949
R=cmumford@chromium.org

Committed: https://crrev.com/341d55881371d22a54560f045cf899034c6c6833
Cr-Commit-Position: refs/heads/master@{#345920}

[jsbell, 2015-08-26 22:30:04]

cmumford@ - please take a look?

[cmumford, 2015-08-26 22:49:50]

lgtm % my one comment.

https://codereview.chromium.org/1321583002/diff/1/content/common/indexed_db/i...
File content/common/indexed_db/indexed_db_constants.h (right):

https://codereview.chromium.org/1321583002/diff/1/content/common/indexed_db/i...
content/common/indexed_db/indexed_db_constants.h:16: const size_t
kMaxIDBValueSizeInBytes =
Instead of "Value" how about "Message" - since getAll returns multiple values in
a single response, so "Value" may be confusing. What about
kMaxIDBMessageSizeInBytes, or kMaxIDBMessagePayloadSizeInBytes (getting
verbose).

[jsbell, 2015-08-27 16:32:22]

The CQ bit was checked by jsbell@chromium.org

[jsbell, 2015-08-27 16:32:22]

The patchset sent to the CQ was uploaded after l-g-t-m from
cmumford@chromium.org
Link to the patchset: https://codereview.chromium.org/1321583002/#ps20001
(title: "Rename constant")

[commit-bot: I haz the power, 2015-08-27 16:33:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1321583002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1321583002/20001

[commit-bot: I haz the power, 2015-08-27 17:58:37]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-08-27 17:59:21]

Patchset 2 (id:??) landed as
https://crrev.com/341d55881371d22a54560f045cf899034c6c6833
Cr-Commit-Position: refs/heads/master@{#345920}