Implemented software output device for Aura.

ui/surface/transport_dib.h

 // 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.
 
 #ifndef UI_SURFACE_TRANSPORT_DIB_H_
 #define UI_SURFACE_TRANSPORT_DIB_H_
 
 #include "base/basictypes.h"
 #include "ui/surface/surface_export.h"
 
@@ skipping 88 matching lines @@
   typedef int Handle;  // These two ints are SysV IPC shared memory keys
   struct Id {
     // Ensure that default initialized Ids are invalid.
     Id() : shmkey(-1) {
     }
 
     bool operator<(const Id& other) const {
       return shmkey < other.shmkey;
     }
 
+    bool operator==(const Id& other) const {
+      return shmkey == other.shmkey;
+    }
+
     int shmkey;
   };
 
   // Returns a default, invalid handle, that is meant to indicate a missing
   // Transport DIB.
   static Handle DefaultHandleValue() { return -1; }
 
   // Returns a value that is ONLY USEFUL FOR TESTS WHERE IT WON'T BE
   // ACTUALLY USED AS A REAL HANDLE.
   static Handle GetFakeHandleForTest() {
@@ skipping 105 matching lines @@
   Display* display_;  // connection to the X server
   size_t inflight_counter_;  // How many requests to the X server are in flight
   bool detached_;  // If true, delete the transport DIB when it is idle
 #endif
   size_t size_;  // length, in bytes
 
   DISALLOW_COPY_AND_ASSIGN(TransportDIB);
 };
 
 #endif  // UI_SURFACE_TRANSPORT_DIB_H_