Disable zoom bubble for PDF extension.

chrome/browser/extensions/extension_util.cc

Index: chrome/browser/extensions/extension_util.cc
diff --git a/chrome/browser/extensions/extension_util.cc b/chrome/browser/extensions/extension_util.cc
index 9696561e0aeb58c34f8e312e7175ef498068c944..a9ecb42aa12403ec6e96e4ddc517f220806c9675 100644
--- a/chrome/browser/extensions/extension_util.cc
+++ b/chrome/browser/extensions/extension_util.cc
@@ -198,6 +198,13 @@ bool CanLoadInIncognito(const Extension* extension,
          IsIncognitoEnabled(extension->id(), context);
 }
 
+bool ZoomWithoutBubble(const Extension* extension) {

[Ken Rockot(use gerrit already), 2015/10/21 16:53:30]

nit: How about "CanZoomWithoutBubble" or "AllowZoomWithoutBubble"? i.e.
something to convey that it's a test for permission rather than an imperative
command

[wjmaclean, 2015/10/21 16:59:46]

Done.

I like "AllowZoomWithoutBubble()" ... let's go with that!

+  return FeatureProvider::GetBehaviorFeature(
+             BehaviorFeature::kZoomWithoutBubble)
+      ->IsAvailableToExtension(extension)
+      .is_available();
+}
+
 bool AllowFileAccess(const std::string& extension_id,
                      content::BrowserContext* context) {
   return base::CommandLine::ForCurrentProcess()->HasSwitch(