Use a direct include of time headers in android_webview/, apps/, ash/.

ash/shell_delegate.h

 // 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.
 
 #ifndef ASH_SHELL_DELEGATE_H_
 #define ASH_SHELL_DELEGATE_H_
 
 #include <string>
 
 #include "ash/ash_export.h"
 #include "ash/magnifier/magnifier_constants.h"
 #include "ash/shell.h"
 #include "base/callback.h"
 #include "base/strings/string16.h"
-#include "base/time.h"
+#include "base/time/time.h"
 
 namespace app_list {
 class AppListViewDelegate;
 }
 
 namespace aura {
 class RootWindow;
 class Window;
 namespace client {
 class UserActionClient;
@@ skipping 230 matching lines @@
   // value.
   virtual RootWindowHostFactory* CreateRootWindowHostFactory() = 0;
 
   // Get the product name.
   virtual base::string16 GetProductName() const = 0;
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_DELEGATE_H_