Stop calling blink::shutdown in content/ tests

content/test/test_blink_web_unit_test_support.cc

Index: content/test/test_blink_web_unit_test_support.cc
diff --git a/content/test/test_blink_web_unit_test_support.cc b/content/test/test_blink_web_unit_test_support.cc
index 0661f3fe99abc01fbc2099fe61a07467e2d85e6e..50b6d3357b365bae165c9904f2a4cfff959bd248 100644
--- a/content/test/test_blink_web_unit_test_support.cc
+++ b/content/test/test_blink_web_unit_test_support.cc
@@ -153,7 +153,6 @@ TestBlinkWebUnitTestSupport::~TestBlinkWebUnitTestSupport() {
   mock_clipboard_.reset();
   if (renderer_scheduler_)
     renderer_scheduler_->Shutdown();
-  blink::shutdown();
 
   // Clear the FeatureList that was registered in the constructor.
   base::FeatureList::ClearInstanceForTesting();