cros: Log per-process memory use on low memory events

chrome/browser/low_memory_observer.cc

 // Copyright (c) 2012 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/low_memory_observer.h"
 
 #include <fcntl.h>
 
 #include "base/bind.h"
 #include "base/chromeos/chromeos_version.h"
@@ skipping 72 matching lines @@
       base::Callback<void(void)> callback = base::Bind(&DiscardTab);
       BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, callback);
       owner_->ScheduleNextObservation();
     }
 
     // Sends off a discard request to the OomPriorityManager.  Must be run on
     // the UI thread.
     static void DiscardTab() {
       CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
       if (g_browser_process && g_browser_process->oom_priority_manager())
-        g_browser_process->oom_priority_manager()->DiscardTab();
+        g_browser_process->oom_priority_manager()->LogMemoryAndDiscardTab();
     }
    private:
     LowMemoryObserverImpl* owner_;
     DISALLOW_COPY_AND_ASSIGN(FileWatcherDelegate);
   };
 
   scoped_ptr<MessageLoopForIO::FileDescriptorWatcher> watcher_;
   FileWatcherDelegate watcher_delegate_;
   int file_descriptor_;
   base::OneShotTimer<LowMemoryObserverImpl> timer_;
@@ skipping 70 matching lines @@
 
 void LowMemoryObserver::Stop() {
   BrowserThread::PostTask(
       BrowserThread::FILE,
       FROM_HERE,
       base::Bind(&LowMemoryObserverImpl::StopObservingOnFileThread,
                  observer_.get()));
 }
 
 }  // namespace browser