Using the new MemoryPressureListener instead of the LowMemoryObserver when the enhanced memory mana…

content/browser/browser_thread_impl.cc

Index: content/browser/browser_thread_impl.cc
diff --git a/content/browser/browser_thread_impl.cc b/content/browser/browser_thread_impl.cc
index a8ce1b0dcd510dea55cc7a95829e83bd116bd345..8e796758c10c3f91dd6e5739ecd6972ca9376992 100644
--- a/content/browser/browser_thread_impl.cc
+++ b/content/browser/browser_thread_impl.cc
@@ -14,6 +14,7 @@
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/threading/thread_restrictions.h"
+#include "content/browser/browser_main_loop.h"
 #include "content/public/browser/browser_thread_delegate.h"
 #include "net/disk_cache/simple/simple_backend_impl.h"
 
@@ -480,6 +481,14 @@ bool BrowserThread::PostTaskAndReply(
                                                                     reply);
 }
 
+#if defined(OS_CHROMEOS)
+// static
+base::MemoryPressureObserverChromeOS*
+BrowserThread::GetMemoryPressureObserver() {
+  return BrowserMainLoop::GetInstance()->memory_pressure_observer();
+}
+#endif
+
 // static
 bool BrowserThread::GetCurrentThreadIdentifier(ID* identifier) {
   if (g_globals == NULL)