Added a unique command buffer ID for command buffers.

content/common/gpu/gpu_command_buffer_stub.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 "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/hash.h"
 #include "base/json/json_writer.h"
 #include "base/memory/shared_memory.h"
@@ skipping 143 matching lines @@
 
 void RunOnThread(scoped_refptr<base::SingleThreadTaskRunner> task_runner,
                  const base::Closure& callback) {
   if (task_runner->BelongsToCurrentThread()) {
     callback.Run();
   } else {
     task_runner->PostTask(FROM_HERE, callback);
   }
 }
 
+uint64_t GetCommandBufferID(int channel_id, int32 route_id) {
+  return (static_cast<uint64_t>(channel_id) << 32) | route_id;
+}
+
 }  // namespace
 
 GpuCommandBufferStub::GpuCommandBufferStub(
     GpuChannel* channel,
     base::SingleThreadTaskRunner* task_runner,
     GpuCommandBufferStub* share_group,
     const gfx::GLSurfaceHandle& handle,
     gpu::gles2::MailboxManager* mailbox_manager,
     gpu::gles2::SubscriptionRefSet* subscription_ref_set,
     gpu::ValueStateMap* pending_valuebuffer_state,
@@ skipping 10 matching lines @@
     const GURL& active_url)
     : channel_(channel),
       task_runner_(task_runner),
       initialized_(false),
       handle_(handle),
       initial_size_(size),
       disallowed_features_(disallowed_features),
       requested_attribs_(attribs),
       gpu_preference_(gpu_preference),
       use_virtualized_gl_context_(use_virtualized_gl_context),
+      command_buffer_id_(GetCommandBufferID(channel->client_id(), route_id)),
       stream_id_(stream_id),
       route_id_(route_id),
       surface_id_(surface_id),
       software_(software),
       last_flush_count_(0),
       last_memory_allocation_valid_(false),
       watchdog_(watchdog),
       sync_point_wait_count_(0),
       previous_processed_num_(0),
       active_url_(active_url),
@@ skipping 999 matching lines @@
                                                     result));
 }
 
 void GpuCommandBufferStub::SendUpdateVSyncParameters(base::TimeTicks timebase,
                                                      base::TimeDelta interval) {
   Send(new GpuCommandBufferMsg_UpdateVSyncParameters(route_id_, timebase,
                                                      interval));
 }
 
 }  // namespace content