[components] Switch {RefCounted}ProfileKeyedService to use BrowserContext

chrome/test/base/chrome_render_view_host_test_harness.cc

Index: chrome/test/base/chrome_render_view_host_test_harness.cc
diff --git a/chrome/test/base/chrome_render_view_host_test_harness.cc b/chrome/test/base/chrome_render_view_host_test_harness.cc
index d4fc77e8ce980417353e9160de2b30223edc466b..c3334b7d263094c5a3b66bfda9a3f6004a634af6 100644
--- a/chrome/test/base/chrome_render_view_host_test_harness.cc
+++ b/chrome/test/base/chrome_render_view_host_test_harness.cc
@@ -35,7 +35,9 @@ RenderViewHostTester* ChromeRenderViewHostTestHarness::rvh_tester() {
   return RenderViewHostTester::For(rvh());
 }
 
-static ProfileKeyedService* BuildSigninManagerFake(Profile* profile) {
+static ProfileKeyedService* BuildSigninManagerFake(
+    content::BrowserContext* context) {
+  Profile* profile = static_cast<Profile*>(context);
 #if defined (OS_CHROMEOS)
   return new FakeSigninManagerBase(profile);
 #else