Revamped signin/sync error surfacing on desktop user menu

chrome/browser/ui/views/profiles/new_avatar_button.h

Index: chrome/browser/ui/views/profiles/new_avatar_button.h
diff --git a/chrome/browser/ui/views/profiles/new_avatar_button.h b/chrome/browser/ui/views/profiles/new_avatar_button.h
index 0811d6d990a8edcbdd2bdfad2bfb63c5b3cba59e..662d58dd5fd99acf1eb9484636163f2553a7e100 100644
--- a/chrome/browser/ui/views/profiles/new_avatar_button.h
+++ b/chrome/browser/ui/views/profiles/new_avatar_button.h
@@ -9,6 +9,7 @@
 #include "chrome/browser/profiles/profile_attributes_storage.h"
 #include "chrome/browser/ui/views/profiles/avatar_button_style.h"
 #include "components/signin/core/browser/signin_error_controller.h"
+#include "components/sync_driver/sync_error_controller.h"
 #include "ui/views/controls/button/label_button.h"
 
 class AvatarButtonDelegate;
@@ -16,9 +17,38 @@ class Profile;
 
 // Avatar button that displays the active profile's name in the caption area.
 class NewAvatarButton : public views::LabelButton,
-                        public ProfileAttributesStorage::Observer,
-                        public SigninErrorController::Observer {
+                        public ProfileAttributesStorage::Observer {
  public:
+  class SigninErrorObserver : public SigninErrorController::Observer {
+   public:
+    SigninErrorObserver(NewAvatarButton* parent_button, Profile* profile);
+    ~SigninErrorObserver() override;
+
+   private:
+    // SigninErrorController::Observer:
+    void OnErrorChanged() override;
+
+    NewAvatarButton* parent_button_;
+    Profile* profile_;
+
+    DISALLOW_COPY_AND_ASSIGN(SigninErrorObserver);
+  };
+
+  class SyncErrorObserver : public SyncErrorController::Observer {
+   public:
+    SyncErrorObserver(NewAvatarButton* parent_button, Profile* profile);
+    ~SyncErrorObserver() override;
+
+   private:
+    // SyncErrorController::Observer:
+    void OnErrorChanged() override;
+
+    NewAvatarButton* parent_button_;
+    Profile* profile_;
+
+    DISALLOW_COPY_AND_ASSIGN(SyncErrorObserver);
+  };
+
   NewAvatarButton(AvatarButtonDelegate* delegate,
                   AvatarButtonStyle button_style,
                   Profile* profile);
@@ -31,6 +61,8 @@ class NewAvatarButton : public views::LabelButton,
   // Views
   void OnGestureEvent(ui::GestureEvent* event) override;
 
+  void OnErrorChanged();
+
  private:
   friend class ProfileChooserViewExtensionsTest;
 
@@ -43,19 +75,19 @@ class NewAvatarButton : public views::LabelButton,
   void OnProfileSupervisedUserIdChanged(
       const base::FilePath& profile_path) override;
 
-  // SigninErrorController::Observer:
-  void OnErrorChanged() override;
-
   // Called when the profile info cache has changed, which means we might
   // have to update the icon/text of the button.
   void Update();
 
+  SigninErrorObserver signin_error_observer_;
+  SyncErrorObserver sync_error_observer_;
+
   AvatarButtonDelegate* delegate_;
   Profile* profile_;
 
-  // Whether the signed in profile has an authentication error. Used to display
-  // an error icon next to the button text.
-  bool has_auth_error_;
+  // Whether the signed in profile has any authentication error or sync error.
+  // Used to display an error icon next to the button text.
+  bool has_error_;
 
   // The icon displayed instead of the profile name in the local profile case.
   // Different assets are used depending on the OS version.