Add NOTIFICATION_EXTENSION_REMOVED for Extensions removed from ExtensionService.

chrome/browser/extensions/extension_service.cc

Index: chrome/browser/extensions/extension_service.cc
diff --git a/chrome/browser/extensions/extension_service.cc b/chrome/browser/extensions/extension_service.cc
index 42cb3fa69ea9ea451229871e5df976d830fb9cd7..4028ee8e57736ab92d643df35c4d0ccb6dd3849f 100644
--- a/chrome/browser/extensions/extension_service.cc
+++ b/chrome/browser/extensions/extension_service.cc
@@ -1895,6 +1895,11 @@ void ExtensionService::UnloadExtension(
   extensions_.Remove(extension->id());
 
   NotifyExtensionUnloaded(extension.get(), reason);
+
+  content::NotificationService::current()->Notify(
+      chrome::NOTIFICATION_EXTENSION_REMOVED,
+      content::Source<Profile>(profile_),
+      content::Details<const Extension>(extension.get()));
 }
 
 void ExtensionService::UnloadAllExtensions() {
@@ -2599,7 +2604,14 @@ void ExtensionService::TrackTerminatedExtension(const Extension* extension) {
 
 void ExtensionService::UntrackTerminatedExtension(const std::string& id) {
   std::string lowercase_id = StringToLowerASCII(id);
+  const Extension* extension = terminated_extensions_.GetByID(lowercase_id);
   terminated_extensions_.Remove(lowercase_id);
+  if (extension) {
+    content::NotificationService::current()->Notify(
+        chrome::NOTIFICATION_EXTENSION_REMOVED,
+        content::Source<Profile>(profile_),
+        content::Details<const Extension>(extension));
+  }
 }
 
 const Extension* ExtensionService::GetTerminatedExtension(