[Extensions] Add renderer-side logic to short circuit activity logging

chrome/browser/extensions/activity_log/activity_log.cc

 // Copyright (c) 2011 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/activity_log/activity_log.h"
 
 #include <stddef.h>
 #include <set>
 #include <utility>
 #include <vector>
@@ skipping 17 matching lines @@
 #include "chrome/browser/prerender/prerender_manager_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "components/syncable_prefs/pref_service_syncable.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
+#include "content/public/browser/render_process_host.h"
 #include "content/public/browser/web_contents.h"
 #include "extensions/browser/api_activity_monitor.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extension_registry_factory.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/browser/extension_system_provider.h"
 #include "extensions/browser/extensions_browser_client.h"
 #include "extensions/common/extension.h"
+#include "extensions/common/extension_messages.h"
 #include "extensions/common/one_shot_event.h"
 #include "third_party/re2/src/re2/re2.h"
 #include "url/gurl.h"
 
 namespace constants = activity_log_constants;
 
 namespace extensions {
 
 namespace {
 
@@ skipping 776 matching lines @@
     return;
   database_policy_->DeleteDatabase();
 }
 
 void ActivityLog::CheckActive() {
   bool has_db = db_enabled_ && database_policy_;
   ActivityLogState& state = g_activity_log_state.Get();
   content::BrowserContext* off_the_record =
       profile_->HasOffTheRecordProfile() ? profile_->GetOffTheRecordProfile()
                                          : nullptr;
+
+  bool old_is_active = is_active_;
   if (has_db || IsWatchdogAppActive()) {
     if (is_active_)
       return;  // Already enabled.
     state.AddActiveContext(profile_);
     if (off_the_record)
       state.AddActiveContext(off_the_record);
     registrar_.Add(this, chrome::NOTIFICATION_PROFILE_CREATED,
                    content::NotificationService::AllSources());
     registrar_.Add(this, chrome::NOTIFICATION_PROFILE_DESTROYED,
                    content::NotificationService::AllSources());
     is_active_ = true;
   } else if (is_active_) {
     state.RemoveActiveContext(profile_);
     if (off_the_record)
       state.RemoveActiveContext(off_the_record);
     registrar_.RemoveAll();
     is_active_ = false;
   }
+
+  if (old_is_active != is_active_) {
+    for (content::RenderProcessHost::iterator iter(
+             content::RenderProcessHost::AllHostsIterator());
+         !iter.IsAtEnd(); iter.Advance()) {
+      content::RenderProcessHost* host = iter.GetCurrentValue();
+      if (profile_->IsSameProfile(
+              Profile::FromBrowserContext(host->GetBrowserContext()))) {
+        host->Send(new ExtensionMsg_SetActivityLoggingEnabled(is_active_));
+      }
+    }
+  }
 }
 
 void ActivityLog::Observe(int type,
                           const content::NotificationSource& source,
                           const content::NotificationDetails& details) {
   DCHECK(is_active_);
   switch (type) {
     case chrome::NOTIFICATION_PROFILE_CREATED: {
       Profile* profile = content::Source<Profile>(source).ptr();
       if (profile_->IsSameProfile(profile))
@@ skipping 11 matching lines @@
   }
 }
 
 template <>
 void BrowserContextKeyedAPIFactory<ActivityLog>::DeclareFactoryDependencies() {
   DependsOn(ExtensionsBrowserClient::Get()->GetExtensionSystemFactory());
   DependsOn(ExtensionRegistryFactory::GetInstance());
 }
 
 }  // namespace extensions