[Extensions] Add logic for when to show the toolbar redesign bubble.

chrome/browser/extensions/extension_toolbar_model.cc

Index: chrome/browser/extensions/extension_toolbar_model.cc
diff --git a/chrome/browser/extensions/extension_toolbar_model.cc b/chrome/browser/extensions/extension_toolbar_model.cc
index 20191775e0f685b8b428e6080b36d929920b3074..ac84f365434e411852ea1e4b891ffce48e15ecbb 100644
--- a/chrome/browser/extensions/extension_toolbar_model.cc
+++ b/chrome/browser/extensions/extension_toolbar_model.cc
@@ -32,6 +32,7 @@
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_set.h"
 #include "extensions/common/feature_switch.h"
+#include "extensions/common/manifest_constants.h"
 #include "extensions/common/one_shot_event.h"
 
 namespace extensions {
@@ -742,4 +743,15 @@ void ExtensionToolbarModel::StopHighlighting() {
   }
 }
 
+bool ExtensionToolbarModel::RedesignIsShowingNewIcons() const {
+  for (const scoped_refptr<const Extension>& extension : toolbar_items_) {
+    // Without the redesign, we only show extensions with browser actions.
+    // Any extension without a browser action is an indication that we're
+    // showing something new.
+    if (!extension->manifest()->HasKey(manifest_keys::kBrowserAction))
+      return true;
+  }
+  return false;
+}
+
 }  // namespace extensions