Support "always allow" for runtime script execution

chrome/browser/extensions/active_script_controller.cc

Index: chrome/browser/extensions/active_script_controller.cc
diff --git a/chrome/browser/extensions/active_script_controller.cc b/chrome/browser/extensions/active_script_controller.cc
index bddc0c5707ad149e96b6d5217aaef9cff329e451..c0b31ae45c8d127b75b2f9f6b2842c4b33afeac7 100644
--- a/chrome/browser/extensions/active_script_controller.cc
+++ b/chrome/browser/extensions/active_script_controller.cc
@@ -14,6 +14,7 @@
 #include "chrome/browser/extensions/extension_action_manager.h"
 #include "chrome/browser/extensions/extension_util.h"
 #include "chrome/browser/extensions/location_bar_controller.h"
+#include "chrome/browser/extensions/permissions_updater.h"
 #include "chrome/browser/extensions/tab_helper.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sessions/session_id.h"
@@ -28,6 +29,8 @@
 #include "extensions/common/extension_set.h"
 #include "extensions/common/feature_switch.h"
 #include "extensions/common/manifest.h"
+#include "extensions/common/manifest_handlers/permissions_parser.h"
+#include "extensions/common/permissions/permission_set.h"
 #include "extensions/common/permissions/permissions_data.h"
 #include "ipc/ipc_message_macros.h"
 
@@ -102,6 +105,42 @@ void ActiveScriptController::OnAdInjectionDetected(
       ad_injectors.size() - num_preventable_ad_injectors);
 }
 
+void ActiveScriptController::AlwaysRunOnVisibleHost(
+    const Extension* extension) {
+  GURL url = web_contents()->GetVisibleURL();
+  URLPatternSet new_explicit_hosts;
+  URLPatternSet new_scriptable_hosts;
+
+  scoped_refptr<const PermissionSet> withheld_permissions =
+      extension->permissions_data()->withheld_permissions();
+  if (withheld_permissions->explicit_hosts().MatchesURL(url)) {
+    new_explicit_hosts.AddOrigin(UserScript::ValidUserScriptSchemes(),
+                                 url.GetOrigin());
+  }
+  if (withheld_permissions->scriptable_hosts().MatchesURL(url)) {
+    new_scriptable_hosts.AddOrigin(UserScript::ValidUserScriptSchemes(),
+                                   url.GetOrigin());
+  }
+
+  scoped_refptr<extensions::PermissionSet> new_permissions =
+      new PermissionSet(extensions::APIPermissionSet(),
+                        extensions::ManifestPermissionSet(),
+                        new_explicit_hosts,
+                        new_scriptable_hosts);
+
+  // Update permissions for the session. This adds |new_permissions| to active
+  // permissions and granted permissions.
+  PermissionsUpdater(web_contents()->GetBrowserContext())
+      .AddPermissions(extension, new_permissions.get());
+
+  // Allow current tab to run injection.
+  OnClicked(extension);
+}
+
+bool ActiveScriptController::HasActiveScriptAction(const Extension* extension) {
+  return enabled_ && active_script_actions_.count(extension->id()) > 0;
+}
+
 ExtensionAction* ActiveScriptController::GetActionForExtension(
     const Extension* extension) {
   if (!enabled_ || pending_requests_.count(extension->id()) == 0)