Add support for a virtual display on ChromeOS

ui/display/chromeos/configure_displays_task.cc

 // Copyright 2014 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 "ui/display/chromeos/configure_displays_task.h"
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
+#include "ui/display/chromeos/display_util.h"
 #include "ui/display/types/display_snapshot.h"
 #include "ui/display/types/native_display_delegate.h"
 
 namespace ui {
 
 namespace {
 
 // Find the next best mode after |display_mode|. If none can be found return
 // nullptr.
 const DisplayMode* FindNextMode(const DisplaySnapshot& display_state,
@@ skipping 48 matching lines @@
   // modes.
   if (is_configuring_)
     return;
 
   {
     base::AutoReset<bool> recursivity_guard(&is_configuring_, true);
     while (!pending_request_indexes_.empty()) {
       size_t index = pending_request_indexes_.front();
       DisplayConfigureRequest* request = &requests_[index];
       pending_request_indexes_.pop();
-      delegate_->Configure(*request->display, request->mode, request->origin,
-                           base::Bind(&ConfigureDisplaysTask::OnConfigured,
-                                      weak_ptr_factory_.GetWeakPtr(), index));
+      // Non-native displays do not require configuration through the
+      // NativeDisplayDelegate.
+      if (!IsNativeDisplay(request->display->type())) {
+        OnConfigured(index, true);
+      } else {
+        delegate_->Configure(*request->display, request->mode, request->origin,
+                             base::Bind(&ConfigureDisplaysTask::OnConfigured,
+                                        weak_ptr_factory_.GetWeakPtr(), index));
+      }
     }
   }
 
   // Nothing should be modified after the |callback_| is called since the
   // task may be deleted in the callback.
   if (num_displays_configured_ == requests_.size())
     callback_.Run(task_status_);
 }
 
 void ConfigureDisplaysTask::OnConfigured(size_t index, bool success) {
@@ skipping 18 matching lines @@
   }
 
   num_displays_configured_++;
   if (!success)
     task_status_ = ERROR;
 
   Run();
 }
 
 }  // namespace ui