Replace all occurrences of words meaning "off the record" with "incognito"

chrome/browser/ui/views/frame/browser_header_painter_ash.cc

Index: chrome/browser/ui/views/frame/browser_header_painter_ash.cc
diff --git a/chrome/browser/ui/views/frame/browser_header_painter_ash.cc b/chrome/browser/ui/views/frame/browser_header_painter_ash.cc
index b6287b65c94c9a9a42cd268bce8156a1efc545bf..d2a731671ff9cc4bc208b3795df82c4393964dfb 100644
--- a/chrome/browser/ui/views/frame/browser_header_painter_ash.cc
+++ b/chrome/browser/ui/views/frame/browser_header_painter_ash.cc
@@ -152,8 +152,8 @@ void BrowserHeaderPainterAsh::Init(
   view_ = header_view;
   window_icon_ = window_icon;
   caption_button_container_ = caption_button_container;
-  // Use light images in otr, even when a custom theme is installed. The
-  // otr window with a custom theme is still darker than a normal window.
+  // Use light images in incognito, even when a custom theme is installed. The
+  // incognito window with a custom theme is still darker than a normal window.
   caption_button_container_->SetUseLightImages(is_incognito_);
 }