[Reland][Extensions] Don't count bubble focus loss as acknowledgment

chrome/browser/extensions/suspicious_extension_bubble_delegate.cc

Index: chrome/browser/extensions/suspicious_extension_bubble_delegate.cc
diff --git a/chrome/browser/extensions/suspicious_extension_bubble_delegate.cc b/chrome/browser/extensions/suspicious_extension_bubble_delegate.cc
index c4b95ed334a4dc2daa6de8d7746c83cc7afd37c8..33381d71da7f31cc01abf8d14a86307635343f76 100644
--- a/chrome/browser/extensions/suspicious_extension_bubble_delegate.cc
+++ b/chrome/browser/extensions/suspicious_extension_bubble_delegate.cc
@@ -26,9 +26,6 @@ namespace {
 // Whether the user has been notified about extension being wiped out.
 const char kWipeoutAcknowledged[] = "ack_wiped";
 
-base::LazyInstance<std::set<Profile*> > g_shown_for_profiles =
-  LAZY_INSTANCE_INITIALIZER;
-
 }  // namespace
 
 namespace extensions {
@@ -132,13 +129,8 @@ void SuspiciousExtensionBubbleDelegate::LogAction(
       action, ExtensionMessageBubbleController::ACTION_BOUNDARY);
 }
 
-std::set<Profile*>* SuspiciousExtensionBubbleDelegate::GetProfileSet() {
-  return g_shown_for_profiles.Pointer();
-}
-
-// static
-void SuspiciousExtensionBubbleDelegate::ClearProfileListForTesting() {
-  g_shown_for_profiles.Get().clear();
+const char* SuspiciousExtensionBubbleDelegate::GetKey() {
+  return "SuspiciousExtensionBubbleDelegate";
 }
 
 }  // namespace extensions