[code coverage] Instrument module_installer_java

Coverage was off for module_installer_java because of crbug/965606
Specifically, ModuleInstaller.java caused different files with same
package and class name.
As this issue was resolved, coverage can turn on now.

Bug: 843307
Change-Id: I91080b9a5b9c29bb2444dc1591d6877f4aad9f39
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1819862Reviewed-by: Tibor Goldschwendt <tiborg@chromium.org>
Reviewed-by: Fred Mello <fredmello@chromium.org>
Commit-Queue: Yun Liu <yliuyliu@google.com>
Cr-Commit-Position: refs/heads/master@{#699834}

components/module_installer/android/BUILD.gn

@@ -29,8 +29,6 @@ android_library("module_installer_java") {
   srcjar_deps = [ ":module_installer_build_config" ]
 
   jar_excluded_patterns = [ "*/ModuleInstallerConfig.class" ]
-
-  jacoco_never_instrument = true
 }
 
 android_library("module_installer_test_java") {