Delete WebGamepads::length.

third_party/WebKit/public/platform/WebGamepad.h

 // Copyright (C) 2011, Google Inc. All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are met:
 //
 // 1. Redistributions of source code must retain the above copyright
 //    notice, this list of conditions and the following disclaimer.
 // 2. Redistributions in binary form must reproduce the above copyright
 //    notice, this list of conditions and the following disclaimer in the
 //    documentation and/or other materials provided with the distribution.
@@ skipping 72 matching lines @@
 // memory between hardware polling threads and the rest of the browser. See
 // also WebGamepads.h.
 class WebGamepad {
  public:
   static const size_t idLengthCap = 128;
   static const size_t mappingLengthCap = 16;
   static const size_t axesLengthCap = 16;
   static const size_t buttonsLengthCap = 32;
 
   WebGamepad()
-      : connected(false), timestamp(0), axesLength(0), buttonsLength(0) {
+      : connected(false),
+        timestamp(0),
+        axesLength(0),
+        buttonsLength(0),
+        displayId(0) {
     id[0] = 0;
     mapping[0] = 0;
   }
 
   // Is there a gamepad connected at this index?
   bool connected;
 
   // Device identifier (based on manufacturer, model, etc.).
   WebUChar id[idLengthCap];
 
@@ skipping 20 matching lines @@
 
   WebGamepadHand hand;
 
   unsigned displayId;
 };
 
 #pragma pack(pop)
 }
 
 #endif  // WebGamepad_h