[Dice] Update settings when account image is updated

When the account image is updated in the background,
settings is now notified to make changes accordingly.

Bug: 882384
Change-Id: I05000533de1205fc5b9d9a9500b4c05f088e8923
Reviewed-on: https://chromium-review.googlesource.com/1238501Reviewed-by: Scott Chen <scottchen@chromium.org>
Commit-Queue: Thomas Tangl <tangltom@chromium.org>
Cr-Commit-Position: refs/heads/master@{#593443}

chrome/browser/ui/webui/settings/people_handler.cc

@@ -484,6 +484,11 @@ void PeopleHandler::OnAccountUpdated(const AccountInfo& info) {
   FireWebUIListener("stored-accounts-updated", *GetStoredAccountsList());
 }
 
+void PeopleHandler::OnAccountImageUpdated(const std::string& account_id,
+                                          const gfx::Image& image) {
+  FireWebUIListener("stored-accounts-updated", *GetStoredAccountsList());
+}
+
 void PeopleHandler::OnAccountRemoved(const AccountInfo& info) {
   FireWebUIListener("stored-accounts-updated", *GetStoredAccountsList());
 }

chrome/browser/ui/webui/settings/people_handler.h

@@ -145,6 +145,8 @@ class PeopleHandler : public SettingsPageUIHandler,
 #if BUILDFLAG(ENABLE_DICE_SUPPORT)
   // AccountTrackerService::Observer implementation.
   void OnAccountUpdated(const AccountInfo& info) override;
+  void OnAccountImageUpdated(const std::string& account_id,
+                             const gfx::Image& image) override;
   void OnAccountRemoved(const AccountInfo& info) override;
 #endif