Add logging to diagnose the display configuration issue on boot/startup.

ui/ozone/platform/dri/native_display_delegate_proxy.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/ozone/platform/dri/native_display_delegate_proxy.h"
 
 #include <stdio.h>
 
 #include "base/logging.h"
 #include "base/thread_task_runner_handle.h"
@@ skipping 88 matching lines @@
 
     // Just read it on current thread as this is necessary information
     // to start. This access only tmpfs, which is fast.
     // TODO(dnicoara|oshima): crbug.com/450886.
     base::ThreadRestrictions::ScopedAllowIO allow_io;
     success = CreateSnapshotFromEDIDFile(kEDIDFile, &params);
   }
 
   // Fallback to command line if the file doesn't exit or failed to read.
   if (success || CreateSnapshotFromCommandLine(&params)) {
+    LOG_IF(ERROR, !success) << "Failed to read display_info.bin.";
     DCHECK_NE(DISPLAY_CONNECTION_TYPE_NONE, params.type);
     displays_.push_back(new DriDisplaySnapshotProxy(params, display_manager_));
     has_dummy_display_ = true;
+  } else {
+    LOG(ERROR) << "Failed to obtain initial display info";
   }
 }
 
 void NativeDisplayDelegateProxy::GrabServer() {
 }
 
 void NativeDisplayDelegateProxy::UngrabServer() {
 }
 
 bool NativeDisplayDelegateProxy::TakeDisplayControl() {
@@ skipping 198 matching lines @@
 void NativeDisplayDelegateProxy::OnDisplayConfigured(int64_t display_id,
                                                      bool status) {
   auto it = configure_callback_map_.find(display_id);
   if (it != configure_callback_map_.end()) {
     it->second.Run(status);
     configure_callback_map_.erase(it);
   }
 }
 
 }  // namespace ui