Give user ability to file a feedback report from the display error notification.

ui/display/chromeos/x11/native_display_event_dispatcher_x11_unittest.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 <stdint.h>
 #include <X11/extensions/Xrandr.h>
 
 #undef Bool
 #undef None
 
@@ skipping 18 matching lines @@
 
   DisplaySnapshotX11* snapshot = new DisplaySnapshotX11(
       id,
       gfx::Point(0, 0),
       gfx::Size(0, 0),
       type,
       false,
       false,
       std::string(),
       std::vector<const DisplayMode*>(1, kDefaultDisplayMode),
+      std::vector<uint8_t>(),
       kDefaultDisplayMode,
       NULL,
       output,
       crtc,
       0);
 
   return snapshot;
 }
 
 DisplaySnapshotX11* CreateExternalOutput(RROutput output, RRCrtc crtc) {
@@ skipping 271 matching lines @@
   outputs.clear();
   outputs.push_back(CreateOutput(0, DISPLAY_CONNECTION_TYPE_UNKNOWN, 2, 11));
   helper_delegate_->set_cached_outputs(outputs.get());
 
   // External display should be updated if the id is zero.
   DispatchOutputChangeEvent(2, 11, 20, true);
   EXPECT_EQ(1, helper_delegate_->num_calls_notify_observers());
 }
 
 }  // namespace ui