Disable zoom bubble for PDF extension.

extensions/browser/extension_zoom_request_client.cc

Index: extensions/browser/extension_zoom_request_client.cc
diff --git a/extensions/browser/extension_zoom_request_client.cc b/extensions/browser/extension_zoom_request_client.cc
index c954532317188f9ba804a5de36de4d33a584f3f0..ce8b45ce4acc009ec4c491b1978594113f1c14d7 100644
--- a/extensions/browser/extension_zoom_request_client.cc
+++ b/extensions/browser/extension_zoom_request_client.cc
@@ -4,6 +4,9 @@
 
 #include "extensions/browser/extension_zoom_request_client.h"
 
+#include "extensions/common/features/behavior_feature.h"
+#include "extensions/common/features/feature_provider.h"
+
 namespace extensions {
 
 ExtensionZoomRequestClient::ExtensionZoomRequestClient(
@@ -11,6 +14,13 @@ ExtensionZoomRequestClient::ExtensionZoomRequestClient(
     : extension_(extension) {
 }
 
+bool ExtensionZoomRequestClient::ShouldSuppressBubble() const {
+  return FeatureProvider::GetBehaviorFeature(
+             BehaviorFeature::kZoomWithoutBubble)
+      ->IsAvailableToExtension(extension())
+      .is_available();
+}
+
 ExtensionZoomRequestClient::~ExtensionZoomRequestClient() {
 }