Rename avatar_url to icon_url in PasswordForm.

components/autofill/core/common/password_form.h

Index: components/autofill/core/common/password_form.h
diff --git a/components/autofill/core/common/password_form.h b/components/autofill/core/common/password_form.h
index 88a7840fd84cfe3dd91376e2ea96956689be044e..67da0ec36246b97efbd3b0ebedbb1cf8757c41ae 100644
--- a/components/autofill/core/common/password_form.h
+++ b/components/autofill/core/common/password_form.h
@@ -246,11 +246,13 @@ struct PasswordForm {
   // User friendly name to show in the UI.
   base::string16 display_name;
 
-  // The URL of the user's avatar to display in the UI. Note that the
-  // corresponding property in the Credential Manager is called icon URL.
-  // TODO(msramek): Rename |avatar_url| to |icon_url| to match the naming
-  // in Credential Manager.
-  GURL avatar_url;
+  // The URL of this credential's icon, such as the user's avatar, to display
+  // in the UI.
+  // TODO(msramek): This field was previously named |avatar_url|. It is still
+  // named this way in the password store backends (e.g. the avatar_url column
+  // in the SQL DB of LoginDatabase) and for the purposes of syncing
+  // (i.e in PasswordSpecificsData). Rename these occurrences.
+  GURL icon_url;
 
   // The URL of identity provider used for federated login.
   GURL federation_url;