A new copy of the old system monitor changelist.

Review URL: http://codereview.chromium.org/12817

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@6126 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 12 insertions, 5 deletions

diff --git a/chrome/browser/safe_browsing/safe_browsing_service.cc b/chrome/browser/safe_browsing/safe_browsing_service.cc
index 3a6fff3..193ac18 100644
--- a/chrome/browser/safe_browsing/safe_browsing_service.cc
+++ b/chrome/browser/safe_browsing/safe_browsing_service.cc
@@ -12,6 +12,7 @@
 #include "base/path_service.h"
 #include "base/string_util.h"
 #include "chrome/browser/browser_process.h"
+#include "chrome/browser/chrome_thread.h"
 #include "chrome/browser/profile_manager.h"
 #include "chrome/browser/safe_browsing/protocol_manager.h"
 #include "chrome/browser/safe_browsing/safe_browsing_blocking_page.h"
@@ -34,9 +35,16 @@ SafeBrowsingService::SafeBrowsingService()
       resetting_(false),
       database_loaded_(false) {
   new_safe_browsing_ = !CommandLine().HasSwitch(switches::kUseOldSafeBrowsing);
+  base::SystemMonitor* monitor = base::SystemMonitor::Get();
+  DCHECK(monitor);
+  if (monitor)
+    monitor->AddObserver(this);
 }
 
 SafeBrowsingService::~SafeBrowsingService() {
+  base::SystemMonitor* monitor = base::SystemMonitor::Get();
+  if (monitor)
+    monitor->RemoveObserver(this);
 }
 
 // Only called on the UI thread.
@@ -662,18 +670,17 @@ void SafeBrowsingService::CacheHashResults(
   GetDatabase()->CacheHashResults(prefixes, full_hashes);
 }
 
-void SafeBrowsingService::OnSuspend() {
+void SafeBrowsingService::OnSuspend(base::SystemMonitor*) {
 }
 
 // Tell the SafeBrowsing database not to do expensive disk operations for a few
 // minutes after waking up. It's quite likely that the act of resuming from a
 // low power state will involve much disk activity, which we don't want to
 // exacerbate.
-void SafeBrowsingService::OnResume() {
-  DCHECK(MessageLoop::current() == io_loop_);
+void SafeBrowsingService::OnResume(base::SystemMonitor*) {
   if (enabled_) {
-    db_thread_->message_loop()->PostTask(FROM_HERE,
-        NewRunnableMethod(this, &SafeBrowsingService::HandleResume));
+    ChromeThread::GetMessageLoop(ChromeThread::DB)->PostTask(FROM_HERE,
+      NewRunnableMethod(this, &SafeBrowsingService::HandleResume));
   }
 }