Convert chromeos/services/device_sync/* to OnPrimaryAccountChanged()

Method OnUnconsentedPrimaryAccountSet is deprecated, so this CL changes
the chromeos/services/device_sync/* to override the method
OnPrimaryAccountChanged().

Bug: 1158855
Change-Id: Ie65d5c846c5c035c09a805a87f088a3ade653e43
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2624628Reviewed-by: Tanmoy Mollik <triploblastic@chromium.org>
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Commit-Queue: Mihai Sardarescu <msarda@chromium.org>
Cr-Commit-Position: refs/heads/master@{#842721}

chromeos/services/device_sync/device_sync_impl.cc

@@ -783,14 +783,20 @@ void DeviceSyncImpl::Shutdown() {
   clock_ = nullptr;
 }
 
-void DeviceSyncImpl::OnUnconsentedPrimaryAccountChanged(
-    const CoreAccountInfo& primary_account_info) {
-  PA_LOG(VERBOSE) << "DeviceSyncImpl: OnUnconsentedPrimaryAccountChanged";
-  // We're only interested when the account is set.
-  if (primary_account_info.account_id.empty())
-    return;
+void DeviceSyncImpl::OnPrimaryAccountChanged(
+    const signin::PrimaryAccountChangeEvent& event) {
+  PA_LOG(VERBOSE) << "DeviceSyncImpl: OnPrimaryAccountChanged";
+  switch (event.GetEventTypeFor(signin::ConsentLevel::kNotRequired)) {
+    case signin::PrimaryAccountChangeEvent::Type::kSet:
       identity_manager_->RemoveObserver(this);
-  ProcessPrimaryAccountInfo(primary_account_info);
+      ProcessPrimaryAccountInfo(event.GetCurrentState().primary_account);
+      break;
+    case signin::PrimaryAccountChangeEvent::Type::kCleared:
+      FALLTHROUGH;
+    case signin::PrimaryAccountChangeEvent::Type::kNone:
+      // Ignored
+      break;
+  }
 }
 
 void DeviceSyncImpl::RunNextInitializationStep() {

chromeos/services/device_sync/device_sync_impl.h

@@ -219,8 +219,8 @@ class DeviceSyncImpl : public DeviceSyncBase,
   void Shutdown() override;
 
   // signin::IdentityManager::Observer:
-  void OnUnconsentedPrimaryAccountChanged(
-      const CoreAccountInfo& primary_account_info) override;
+  void OnPrimaryAccountChanged(
+      const signin::PrimaryAccountChangeEvent& event) override;
 
   // Initialization functions.
   void RunNextInitializationStep();