Customize user details in ash system bubble for public account mode

ui/views/view_text_utils.cc

Index: ui/views/view_text_utils.cc
diff --git a/ui/views/view_text_utils.cc b/ui/views/view_text_utils.cc
index 0ea27d7624d9c35c09ab5a3af10e7197caa12e98..cdc26293da99ce4ad32eca2dab0954462a6958f4 100644
--- a/ui/views/view_text_utils.cc
+++ b/ui/views/view_text_utils.cc
@@ -26,7 +26,7 @@ void DrawTextAndPositionUrl(gfx::Canvas* canvas,
                             bool text_direction_is_rtl,
                             const gfx::Rect& bounds,
                             const gfx::Font& font) {
-  DCHECK(canvas && position);
+  DCHECK(position);
 
   // The |text| parameter is potentially a mix of LTR and RTL "runs," where
   // a run is a sequence of words that share the same directionality. We
@@ -128,8 +128,10 @@ void DrawTextStartingFrom(gfx::Canvas* canvas,
     int y = position->height() + bounds.y();
 
     // Draw the text on the screen (mirrored, if RTL run).
-    canvas->DrawStringInt(word, font, label->enabled_color(), x, y, w,
-                          font.GetHeight(), flags);
+    if (canvas) {
+      canvas->DrawStringInt(word, font, label->enabled_color(), x, y, w,
+                            font.GetHeight(), flags);
+    }
 
     if (!word.empty() && word[word.size() - 1] == '\x0a') {
       // When we come across '\n', we move to the beginning of the next line.