Coverity: Initialize member variables.

ppapi/shared_impl/ppb_input_event_shared.cc

 // 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.
 
 #include "ppapi/shared_impl/ppb_input_event_shared.h"
 
 #include "ppapi/shared_impl/var.h"
 
 using ppapi::thunk::PPB_InputEvent_API;
 
 namespace ppapi {
 
 InputEventData::InputEventData()
     : is_filtered(false),
       event_type(PP_INPUTEVENT_TYPE_UNDEFINED),
       event_time_stamp(0.0),
       event_modifiers(0),
       mouse_button(PP_INPUTEVENT_MOUSEBUTTON_NONE),
       mouse_position(PP_MakePoint(0, 0)),
       mouse_click_count(0),
       mouse_movement(PP_MakePoint(0, 0)),
       wheel_delta(PP_MakeFloatPoint(0.0f, 0.0f)),
       wheel_ticks(PP_MakeFloatPoint(0.0f, 0.0f)),
       wheel_scroll_by_page(false),
       key_code(0),
+      usb_key_code(0),
       character_text(),
       composition_target_segment(-1),
       composition_selection_start(0),
       composition_selection_end(0),
       touches(),
       changed_touches(),
       target_touches() {
 }
 
 InputEventData::~InputEventData() {
@@ skipping 301 matching lines @@
     return 0;
 
   InputEventData data;
   data.event_type = event_type;
   data.event_time_stamp = time_stamp;
   data.event_modifiers = modifiers;
   return (new PPB_InputEvent_Shared(type, instance, data))->GetReference();
 }
 
 }  // namespace ppapi