Pass FROM_HERE to ObserverListThreadSafe::Notify to improve profile.

media/base/user_input_monitor_win.cc

 // Copyright 2013 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 "media/base/user_input_monitor.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 187 matching lines @@
   DCHECK_EQ(size, result);
 
   // Notify the observer about events generated locally.
   if (input->header.dwType == RIM_TYPEMOUSE && input->header.hDevice != NULL) {
     POINT position;
     if (!GetCursorPos(&position)) {
       position.x = 0;
       position.y = 0;
     }
     mouse_listeners_->Notify(
-        &UserInputMonitor::MouseEventListener::OnMouseMoved,
+        FROM_HERE, &UserInputMonitor::MouseEventListener::OnMouseMoved,
         SkIPoint::Make(position.x, position.y));
   } else if (input->header.dwType == RIM_TYPEKEYBOARD &&
              input->header.hDevice != NULL) {
     ui::EventType event = (input->data.keyboard.Flags & RI_KEY_BREAK)
                               ? ui::ET_KEY_RELEASED
                               : ui::ET_KEY_PRESSED;
     ui::KeyboardCode key_code =
         ui::KeyboardCodeForWindowsKeyCode(input->data.keyboard.VKey);
     counter_.OnKeyboardEvent(event, key_code);
   }
@@ skipping 89 matching lines @@
 
 }  // namespace
 
 scoped_ptr<UserInputMonitor> UserInputMonitor::Create(
     const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner,
     const scoped_refptr<base::SingleThreadTaskRunner>& ui_task_runner) {
   return scoped_ptr<UserInputMonitor>(new UserInputMonitorWin(ui_task_runner));
 }
 
 }  // namespace media