PS - Adjusting webRequest API for use in Public Sessions

extensions/browser/api/web_request/web_request_api.cc

Index: extensions/browser/api/web_request/web_request_api.cc
diff --git a/extensions/browser/api/web_request/web_request_api.cc b/extensions/browser/api/web_request/web_request_api.cc
index 829ebb512eb72d044537eb4afa30a5f800fcf704..5d408f78d4e7658cfd5631a1b557d7dd577211f1 100644
--- a/extensions/browser/api/web_request/web_request_api.cc
+++ b/extensions/browser/api/web_request/web_request_api.cc
@@ -22,6 +22,7 @@
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
 #include "base/values.h"
+#include "chromeos/login/login_state.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/resource_request_info.h"
 #include "content/public/browser/user_metrics.h"
@@ -338,6 +339,16 @@ bool ShouldHideEvent(void* browser_context,
                                              navigation_ui_data));
 }
 
+// Returns true if we're in a Public Session.
+bool IsPublicSession() {
+#if defined(OS_CHROMEOS)
+  if (chromeos::LoginState::IsInitialized()) {
+    return chromeos::LoginState::Get()->IsPublicSessionUser();
+  }
+#endif
+  return false;
+}
+
 }  // namespace
 
 WebRequestAPI::WebRequestAPI(content::BrowserContext* context)
@@ -2127,7 +2138,10 @@ WebRequestInternalAddEventListenerFunction::Run() {
     // http://www.example.com/bar/*.
     // For this reason we do only a coarse check here to warn the extension
     // developer if they do something obviously wrong.
-    if (extension->permissions_data()
+    // When we are in a Public Session, allow all URL's for webRequests
+    // initiated by a regular extension.
+    if (!(IsPublicSession() && extension->is_extension()) &&
+        extension->permissions_data()
             ->GetEffectiveHostPermissions()
             .is_empty() &&
         extension->permissions_data()