Forward handling of low-mem message to the content renderer client. Add APIs to handle this case.

chrome/browser/ui/browser.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/ui/browser.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <shellapi.h>
 #endif  // OS_WIN
@@ skipping 31 matching lines @@
 #include "chrome/browser/extensions/extension_prefs.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_tab_helper.h"
 #include "chrome/browser/extensions/extension_tabs_module.h"
 #include "chrome/browser/favicon/favicon_tab_helper.h"
 #include "chrome/browser/first_run/first_run.h"
 #include "chrome/browser/google/google_url_tracker.h"
 #include "chrome/browser/google/google_util.h"
 #include "chrome/browser/instant/instant_controller.h"
 #include "chrome/browser/instant/instant_unload_handler.h"
+#include "chrome/browser/memory_purger.h"
 #include "chrome/browser/net/browser_url_util.h"
 #include "chrome/browser/net/url_fixer_upper.h"
 #include "chrome/browser/notifications/notification_ui_manager.h"
 #include "chrome/browser/platform_util.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/printing/cloud_print/cloud_print_setup_flow.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sessions/restore_tab_helper.h"
 #include "chrome/browser/sessions/session_service.h"
 #include "chrome/browser/sessions/session_service_factory.h"
@@ skipping 1859 matching lines @@
   UserMetrics::RecordAction(UserMetricsAction("ReportBug"));
   browser::ShowHtmlBugReportView(this, std::string(), 0);
 }
 
 void Browser::ToggleBookmarkBar() {
   UserMetrics::RecordAction(UserMetricsAction("ShowBookmarksBar"));
   window_->ToggleBookmarkBar();
 }
 
 void Browser::OpenBookmarkManager() {
+  LOG(INFO) << "Purging renderers";
+  MemoryPurger::PurgeRenderers();
   UserMetrics::RecordAction(UserMetricsAction("ShowBookmarkManager"));
   UserMetrics::RecordAction(UserMetricsAction("ShowBookmarks"));
   ShowSingletonTabOverwritingNTP(
     GetSingletonTabNavigateParams(GURL(chrome::kChromeUIBookmarksURL)));
+
 }
 
 void Browser::OpenBookmarkManagerForNode(int64 node_id) {
   UserMetrics::RecordAction(UserMetricsAction("ShowBookmarkManager"));
   UserMetrics::RecordAction(UserMetricsAction("ShowBookmarks"));
   ShowSingletonTabOverwritingNTP(
     GetSingletonTabNavigateParams(GURL(chrome::kChromeUIBookmarksURL).Resolve(
       StringPrintf("/#%s", base::Int64ToString(node_id).c_str()))));
 }
 
@@ skipping 2837 matching lines @@
   window_->BookmarkBarStateChanged(animate_type);
 }
 
 void Browser::ShowSyncSetup() {
   ProfileSyncService* service = profile()->GetProfileSyncService();
   if (service->HasSyncSetupCompleted())
     ShowOptionsTab(chrome::kSyncSetupSubPage);
   else
     profile()->GetProfileSyncService()->ShowLoginDialog();
 }