Support "always allow" for runtime script execution

chrome/browser/extensions/active_script_controller.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/active_script_controller.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/histogram.h"
 #include "base/stl_util.h"
 #include "chrome/browser/extensions/active_tab_permission_granter.h"
 #include "chrome/browser/extensions/extension_action.h"
 #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"
 #include "chrome/common/extensions/api/extension_action/action_info.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_messages.h"
 #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"

[Devlin, 2014/08/14 01:20:18]

Why?

[gpdavis, 2014/08/14 20:05:43]

Oops; leftover from patchset 13.  Done.

+#include "extensions/common/permissions/permission_set.h"
 #include "extensions/common/permissions/permissions_data.h"
 #include "ipc/ipc_message_macros.h"
 
 namespace extensions {
 
 namespace {
 
 // Returns true if the extension should be regarded as a "permitted" extension
 // for the case of metrics. We need this because we only actually withhold
 // permissions if the switch is enabled, but want to record metrics in all
@@ skipping 54 matching lines @@
           ad_injectors, permitted_extensions_).size();
 
   UMA_HISTOGRAM_COUNTS_100(
       "Extensions.ActiveScriptController.PreventableAdInjectors",
       num_preventable_ad_injectors);
   UMA_HISTOGRAM_COUNTS_100(
       "Extensions.ActiveScriptController.UnpreventableAdInjectors",
       ad_injectors.size() - num_preventable_ad_injectors);
 }
 
+void ActiveScriptController::AlwaysRunOnVisibleHost(
+    const Extension* extension) {
+  GURL url = web_contents()->GetVisibleURL();

[Devlin, 2014/08/14 01:20:18]

const &

[gpdavis, 2014/08/14 20:05:42]

Done.

+  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(),

[Devlin, 2014/08/14 01:20:18]

no extensions::

[gpdavis, 2014/08/14 20:05:42]

Done.

+                        extensions::ManifestPermissionSet(),

[Devlin, 2014/08/14 01:20:18]

no extensions::

[gpdavis, 2014/08/14 20:05:42]

Done.

+                        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)
     return NULL;  // No action for this extension.
 
   ActiveScriptMap::iterator existing =
       active_script_actions_.find(extension->id());
   if (existing != active_script_actions_.end())
     return existing->second.get();
 
@@ skipping 191 matching lines @@
     UMA_HISTOGRAM_COUNTS_100(
         "Extensions.ActiveScriptController.PermittedExtensions",
         permitted_extensions_.size());
     UMA_HISTOGRAM_COUNTS_100(
         "Extensions.ActiveScriptController.DeniedExtensions",
         pending_requests_.size());
   }
 }
 
 }  // namespace extensions