Introducing gpu::CommandBufferId as a distinct, IdType<...>-based type.

gpu/command_buffer/client/gles2_implementation.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.
 
 // A class to emulate GLES2 over command buffers.
 
 #include "gpu/command_buffer/client/gles2_implementation.h"
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
@@ skipping 129 matching lines @@
   ss << std::hex << this;
   this_in_hex_ = ss.str();
 
   GPU_CLIENT_LOG_CODE_BLOCK({
     debug_ = base::CommandLine::ForCurrentProcess()->HasSwitch(
         switches::kEnableGPUClientLogging);
   });
 
   share_group_ =
       (share_group ? share_group
-                   : new ShareGroup(bind_generates_resource,
-                                    gpu_control_->GetCommandBufferID()));
+                   : new ShareGroup(
+                         bind_generates_resource,
+                         gpu_control_->GetCommandBufferID().GetUnsafeValue()));
   DCHECK(share_group_->bind_generates_resource() == bind_generates_resource);
 
   memset(&reserved_ids_, 0, sizeof(reserved_ids_));
 }
 
 bool GLES2Implementation::Initialize(
     unsigned int starting_transfer_buffer_size,
     unsigned int min_transfer_buffer_size,
     unsigned int max_transfer_buffer_size,
     unsigned int mapped_memory_limit) {
@@ skipping 5481 matching lines @@
     if (sync_token_data.HasData()) {
       if (!sync_token_data.verified_flush() &&
           !gpu_control_->CanWaitUnverifiedSyncToken(&sync_token_data)) {
         SetGLError(GL_INVALID_VALUE, "glWaitSyncTokenCHROMIUM",
                    "Cannot wait on sync_token which has not been verified");
         return;
       }
 
       helper_->WaitSyncTokenCHROMIUM(
           static_cast<GLint>(sync_token_data.namespace_id()),
-          sync_token_data.command_buffer_id(), sync_token_data.release_count());
+          sync_token_data.command_buffer_id().GetUnsafeValue(),
+          sync_token_data.release_count());
     }
   }
 }
 
 namespace {
 
 bool ValidImageFormat(GLenum internalformat,
                       const Capabilities& capabilities) {
   switch (internalformat) {
     case GL_ATC_RGB_AMD:
@@ skipping 881 matching lines @@
   CheckGLError();
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/client/gles2_implementation_impl_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu