Remove dependency on test_runner from some components unittests.

components/webcrypto/algorithms/test_helpers.cc

Index: components/webcrypto/algorithms/test_helpers.cc
diff --git a/components/webcrypto/algorithms/test_helpers.cc b/components/webcrypto/algorithms/test_helpers.cc
index 0380c70cdf90987ea4a4abeb1ba2486b3e0ac365..8751735496e94c18fc08f153666312b9e7cc339a 100644
--- a/components/webcrypto/algorithms/test_helpers.cc
+++ b/components/webcrypto/algorithms/test_helpers.cc
@@ -18,7 +18,6 @@
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/values.h"
-#include "components/test_runner/test_common.h"
 #include "components/webcrypto/algorithm_dispatch.h"
 #include "components/webcrypto/crypto_data.h"
 #include "components/webcrypto/generate_key_result.h"
@@ -42,9 +41,7 @@ bool Base64DecodeUrlSafe(const std::string& input, std::string* output) {
 }  // namespace
 
 // static
-void WebCryptoTestBase::SetUpTestCase() {
-  test_runner::EnsureBlinkInitialized();
-}
+void WebCryptoTestBase::SetUpTestCase() {}
 
 void PrintTo(const Status& status, ::std::ostream* os) {
   *os << StatusToString(status);