Reland fix for thumbnail generation.

chrome/browser/ui/exclusive_access/fullscreen_controller.cc

Index: chrome/browser/ui/exclusive_access/fullscreen_controller.cc
diff --git a/chrome/browser/ui/exclusive_access/fullscreen_controller.cc b/chrome/browser/ui/exclusive_access/fullscreen_controller.cc
index 9f18156b6f09cca7b8ef2857e9901875a6db8cd8..8f058d2b22bd7930769e1fe47ce62cb2dfab368b 100644
--- a/chrome/browser/ui/exclusive_access/fullscreen_controller.cc
+++ b/chrome/browser/ui/exclusive_access/fullscreen_controller.cc
@@ -93,13 +93,14 @@ bool FullscreenController::IsUserAcceptedFullscreen() const {
 
 bool FullscreenController::IsFullscreenForTabOrPending(
     const WebContents* web_contents) const {
+  if (IsFullscreenForCapturedTab(web_contents))
+    return true;
   if (web_contents == exclusive_access_tab()) {
     DCHECK(web_contents ==
            exclusive_access_manager()->context()->GetActiveWebContents());
-    DCHECK(web_contents->GetCapturerCount() == 0);
     return true;
   }
-  return IsFullscreenForCapturedTab(web_contents);
+  return false;
 }
 
 bool FullscreenController::IsFullscreenCausedByTab() const {