Suppress JavaScript dialogs when a tab puts itself into fullscreen.

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 19d9d26bb515dabebf7fc2b03b581dc393474d66..c0acb735688cdd43fbc1a4fcdfb5739b136768dc 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -4092,10 +4092,9 @@ void WebContentsImpl::RunJavaScriptMessage(
   // Suppress JavaScript dialogs when requested. Also suppress messages when
   // showing an interstitial as it's shown over the previous page and we don't
   // want the hidden page's dialogs to interfere with the interstitial.
-  bool suppress_this_message =
-      ShowingInterstitialPage() || !delegate_ ||
-      delegate_->ShouldSuppressDialogs(this) ||
-      !delegate_->GetJavaScriptDialogManager(this);
+  bool suppress_this_message = ShowingInterstitialPage() || !delegate_ ||
+                               delegate_->ShouldSuppressDialogs(this, false) ||
+                               !delegate_->GetJavaScriptDialogManager(this);
 
   if (!suppress_this_message) {
     dialog_manager_ = delegate_->GetJavaScriptDialogManager(this);
@@ -4128,11 +4127,10 @@ void WebContentsImpl::RunBeforeUnloadConfirm(
   if (delegate_)
     delegate_->WillRunBeforeUnloadConfirm();
 
-  bool suppress_this_message =
-      !rfhi->is_active() ||
-      ShowingInterstitialPage() || !delegate_ ||
-      delegate_->ShouldSuppressDialogs(this) ||
-      !delegate_->GetJavaScriptDialogManager(this);
+  bool suppress_this_message = !rfhi->is_active() ||
+                               ShowingInterstitialPage() || !delegate_ ||
+                               delegate_->ShouldSuppressDialogs(this, true) ||
+                               !delegate_->GetJavaScriptDialogManager(this);
   if (suppress_this_message) {
     rfhi->JavaScriptDialogClosed(reply_msg, true, base::string16(), true);
     return;