Fix memory leak in unit test

chrome/browser/component_updater/cros_component_installer_unittest.cc

Index: chrome/browser/component_updater/cros_component_installer_unittest.cc
diff --git a/chrome/browser/component_updater/cros_component_installer_unittest.cc b/chrome/browser/component_updater/cros_component_installer_unittest.cc
index 951771b87b1c6d0210f2b33484dcfb6767c275e8..b723d52f6198195136c9c99f9d42f0a5c2546cfb 100644
--- a/chrome/browser/component_updater/cros_component_installer_unittest.cc
+++ b/chrome/browser/component_updater/cros_component_installer_unittest.cc
@@ -87,10 +87,10 @@ class FakeInstallerTraits : public ComponentInstallerTraits {
 void install_callback(update_client::Error error) {}
 
 TEST_F(CrOSComponentInstallerTest, BPPPCompatibleCrOSComponent) {
-  auto* bppp = new BrowserProcessPlatformPart();
-  ASSERT_EQ(bppp->IsCompatibleCrOSComponent("a"), false);
-  bppp->AddCompatibleCrOSComponent("a");
-  ASSERT_EQ(bppp->IsCompatibleCrOSComponent("a"), true);
+  BrowserProcessPlatformPart bppp;
+  ASSERT_EQ(bppp.IsCompatibleCrOSComponent("a"), false);
+  bppp.AddCompatibleCrOSComponent("a");
+  ASSERT_EQ(bppp.IsCompatibleCrOSComponent("a"), true);
 }
 
 TEST_F(CrOSComponentInstallerTest, RegisterComponentFail) {