Adding offline navigations to the previews blacklist

chrome/browser/previews/previews_infobar_delegate.h

Index: chrome/browser/previews/previews_infobar_delegate.h
diff --git a/chrome/browser/previews/previews_infobar_delegate.h b/chrome/browser/previews/previews_infobar_delegate.h
index 1b133ef44a5cfa9851d8faddb6dc88ee2e30f5c0..38a996fbdd580047fb4ee57778f004d1f5f4835d 100644
--- a/chrome/browser/previews/previews_infobar_delegate.h
+++ b/chrome/browser/previews/previews_infobar_delegate.h
@@ -5,6 +5,7 @@
 #ifndef CHROME_BROWSER_PREVIEWS_PREVIEWS_INFOBAR_DELEGATE_H_
 #define CHROME_BROWSER_PREVIEWS_PREVIEWS_INFOBAR_DELEGATE_H_
 
+#include "base/callback.h"
 #include "components/infobars/core/confirm_infobar_delegate.h"
 
 namespace content {
@@ -25,6 +26,8 @@ class PreviewsInfoBarDelegate : public ConfirmInfoBarDelegate {
     OFFLINE,   // Offline copy of the page.
   };
 
+  typedef base::Callback<void(bool opt_out)> PreviewsUserLeavePreviewCallback;

[megjablon, 2016/11/09 00:19:11]

Can we call this OnDismissPreviewsInfobarCallback?

[RyanSturm, 2016/11/09 18:47:13]

Done.

+
   // Actions on the previews infobar. This enum must remain synchronized with
   // the enum of the same name in metrics/histograms/histograms.xml.
   enum PreviewsInfoBarAction {
@@ -39,12 +42,16 @@ class PreviewsInfoBarDelegate : public ConfirmInfoBarDelegate {
 
   // Creates a preview infobar and corresponding delegate and adds the infobar
   // to InfoBarService.
-  static void Create(content::WebContents* web_contents,
-                     PreviewsInfoBarType infobar_type);
+  static void Create(
+      content::WebContents* web_contents,
+      PreviewsInfoBarType infobar_type,
+      const PreviewsUserLeavePreviewCallback& user_leaving_preview_callback);
 
  private:
-  PreviewsInfoBarDelegate(content::WebContents* web_contents,
-                          PreviewsInfoBarType infobar_type);
+  PreviewsInfoBarDelegate(
+      content::WebContents* web_contents,
+      PreviewsInfoBarType infobar_type,
+      const PreviewsUserLeavePreviewCallback& user_leaving_preview_callback);
 
   // ConfirmInfoBarDelegate overrides:
   infobars::InfoBarDelegate::InfoBarIdentifier GetIdentifier() const override;
@@ -58,6 +65,8 @@ class PreviewsInfoBarDelegate : public ConfirmInfoBarDelegate {
 
   PreviewsInfoBarType infobar_type_;
 
+  PreviewsUserLeavePreviewCallback user_leaving_preview_callback_;
+
   DISALLOW_COPY_AND_ASSIGN(PreviewsInfoBarDelegate);
 };