GitLab

Perform the following renames:

  - rule_indexing_unittest.cc -> declarative_net_request_unittest.cc
  - RuleIndexingTestBase -> DeclarativeNetRequestUnittest
  - SingleRulesetIndexingTest -> SingleRulesetTest
  - MultipleRulesetsIndexingTest -> MultipleRulesetsTest

This is necessary because the file and the associated test fixtures now
contain non-indexing related tests. It's now meant to be a generic unit
test class for declarativeNetRequest.

BUG=754526

Change-Id: I71ac1cc1db004b40b0a45f167e43eac97ad6c54e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2146290
Commit-Queue: Karan Bhatia <karandeepb@chromium.org>
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#759484}