Remove support for special "sign in process" state.

components/signin/core/browser/test_signin_client.cc

Index: components/signin/core/browser/test_signin_client.cc
diff --git a/components/signin/core/browser/test_signin_client.cc b/components/signin/core/browser/test_signin_client.cc
index f2ca618228d321bc88067487fcc13d10f0abf536..536f137a28602d51ce8fbd1fbaf7f7543ebe9b56 100644
--- a/components/signin/core/browser/test_signin_client.cc
+++ b/components/signin/core/browser/test_signin_client.cc
@@ -14,12 +14,6 @@
 #include "ios/public/test/fake_profile_oauth2_token_service_ios_provider.h"
 #endif
 
-namespace {
-
-// Helper for testing.
-const int kInvalidProcessId = -1;
-}
-
 TestSigninClient::TestSigninClient()
     : request_context_(new net::TestURLRequestContextGetter(
           base::MessageLoopProxy::current())),
@@ -110,26 +104,6 @@ TestSigninClient::GetIOSProviderAsFake() {
 }
 #endif
 
-void TestSigninClient::SetSigninProcess(int process_id) {
-  if (process_id == signin_host_id_)
-    return;
-  DLOG_IF(WARNING, signin_host_id_ != kInvalidProcessId)
-      << "Replacing in-use signin process.";
-  signin_host_id_ = process_id;
-}
-
-void TestSigninClient::ClearSigninProcess() {
-  signin_host_id_ = kInvalidProcessId;
-}
-
-bool TestSigninClient::IsSigninProcess(int process_id) const {
-  return process_id == signin_host_id_;
-}
-
-bool TestSigninClient::HasSigninProcess() const {
-  return signin_host_id_ != kInvalidProcessId;
-}
-
 bool TestSigninClient::IsFirstRun() const {
   return false;
 }