Disable app banners in incognito.

chrome/browser/installable/installable_logging.cc

Index: chrome/browser/installable/installable_logging.cc
diff --git a/chrome/browser/installable/installable_logging.cc b/chrome/browser/installable/installable_logging.cc
index 9fd06cf0678447f2fd9fe581c428e70e4565e6fb..c580176e5b763d691ce0d498d97ea27a4f5fe03b 100644
--- a/chrome/browser/installable/installable_logging.cc
+++ b/chrome/browser/installable/installable_logging.cc
@@ -61,6 +61,8 @@ static const char kIdsDoNotMatchMessage[] =
     "but they do not match";
 static const char kUrlNotSupportedForWebApkMessage[] =
     "a URL in the web manifest contains a username, password, or port";
+static const char kInIncognitoMessage[] =
+    "the page is loaded in an incognito window";
 
 }  // namespace
 
@@ -145,6 +147,9 @@ void LogErrorToConsole(content::WebContents* web_contents,
     case URL_NOT_SUPPORTED_FOR_WEBAPK:
       pattern = kUrlNotSupportedForWebApkMessage;
       break;
+    case IN_INCOGNITO:
+      pattern = kInIncognitoMessage;
+      break;
   }
 
   if (!pattern)