Allow extensions on chrome:// URLs, when flag is set and permission is explicitly requested

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 1a47b406d80c72c66491c8ae0043b31e5ffb4396..1ddfc8ca6cd31dc991b3a3252f97600399ac7fb0 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -1141,6 +1141,7 @@ void ChromeContentBrowserClient::AppendExtraCommandLineSwitches(
       switches::kEnablePasswordGeneration,
       switches::kEnablePnacl,
       switches::kEnableWatchdog,
+      switches::kExtensionsOnChromeURLs,
       switches::kMemoryProfiling,
       switches::kMessageLoopHistogrammer,
       switches::kNoJsRandomness,
@@ -1165,6 +1166,7 @@ void ChromeContentBrowserClient::AppendExtraCommandLineSwitches(
     static const char* const kSwitchNames[] = {
       switches::kAllowHTTPBackgroundPage,
       switches::kEnableExperimentalExtensionApis,
+      switches::kExtensionsOnChromeURLs,
       switches::kWhitelistedExtensionID,
     };
 
@@ -1187,6 +1189,7 @@ void ChromeContentBrowserClient::AppendExtraCommandLineSwitches(
       switches::kUserDataDir,  // Make logs go to the right file.
       // Load (in-process) Pepper plugins in-process in the zygote pre-sandbox.
       switches::kDisableBundledPpapiFlash,
+      switches::kExtensionsOnChromeURLs,
       switches::kPpapiFlashInProcess,
       switches::kPpapiFlashPath,
       switches::kPpapiFlashVersion,