ResourceLoader: Migrate wfGetDB call to ICP and move to WikiModule

* Remove references to IDatabase from preloadModuleInfo() and with
  it the last reference to Rdbms in the ResourceLoader service
  (progressing T32956).

* Simplify WikiModule::preloadTitleInfo() so that it doesn't need
  an IDatabase object unless
  1) there are non-zero WikiModule objects in the batch, and
  2) there is a cache miss.

* Remove needless IDatabase parameters passed or mocked for this
  method. Note that WikiModule already had `@group Database` set
  since each WikiModule::getDB() is called and uses an unmocked
  database. The mocked database was only injected to satisfy the
  method signature.

Bug: T32956
Bug: T359522
Change-Id: I022f02d6e6bbae46c3258a7c07a1d6723506d8bc

1 files changed, 0 insertions, 6 deletions

diff --git a/tests/phpunit/includes/ResourceLoader/StartUpModuleTest.php b/tests/phpunit/includes/ResourceLoader/StartUpModuleTest.php
index ed2624e7f388..99123adc38de 100644
--- a/tests/phpunit/includes/ResourceLoader/StartUpModuleTest.php
+++ b/tests/phpunit/includes/ResourceLoader/StartUpModuleTest.php
@@ -6,7 +6,6 @@ use Exception;
 use MediaWiki\ResourceLoader\Module;
 use MediaWiki\ResourceLoader\StartUpModule;
 use Psr\Log\NullLogger;
-use Wikimedia\Rdbms\ILoadBalancer;
 
 /**
  * @group ResourceLoader
@@ -14,11 +13,6 @@ use Wikimedia\Rdbms\ILoadBalancer;
  */
 class StartUpModuleTest extends ResourceLoaderTestCase {
 
-	protected function setUp(): void {
-		parent::setUp();
-		$this->setService( 'DBLoadBalancer', $this->createMock( ILoadBalancer::class ) );
-	}
-
 	protected static function expandPlaceholders( $text ) {
 		return strtr( $text, [
 			'{blankVer}' => self::BLANK_VERSION