Delete IPC::ChannelPosix, IPC::ChannelWin and IPC::AttachmentBroker.

ipc/brokerable_attachment.cc

Index: ipc/brokerable_attachment.cc
diff --git a/ipc/brokerable_attachment.cc b/ipc/brokerable_attachment.cc
index 96ce5bb6193861a7c100fee0e0fca4fcd6dabd5a..a0746e122b24f759618a0c154493ff7c4722584f 100644
--- a/ipc/brokerable_attachment.cc
+++ b/ipc/brokerable_attachment.cc
@@ -7,52 +7,14 @@
 #include <stddef.h>
 
 #include "build/build_config.h"
-#include "ipc/attachment_broker.h"
 
 namespace IPC {
 
-// BrokerableAttachment::AttachmentId ------------------------------------------
-#if !USE_ATTACHMENT_BROKER
-// static
-BrokerableAttachment::AttachmentId
-BrokerableAttachment::AttachmentId::CreateIdWithRandomNonce() {
-  CHECK(false) << "Platforms that don't support attachment brokering shouldn't "
-                  "be trying to generating a random nonce.";
-  return AttachmentId();
-}
-#endif
-
-BrokerableAttachment::AttachmentId::AttachmentId() {
-  for (size_t i = 0; i < BrokerableAttachment::kNonceSize; ++i)
-    nonce[i] = 0;
-}
-
-BrokerableAttachment::AttachmentId::AttachmentId(const char* start_address,
-                                                 size_t size) {
-  DCHECK(size == BrokerableAttachment::kNonceSize);
-  for (size_t i = 0; i < BrokerableAttachment::kNonceSize; ++i)
-    nonce[i] = start_address[i];
-}
-
-void BrokerableAttachment::AttachmentId::SerializeToBuffer(char* start_address,
-                                                           size_t size) {
-  DCHECK(size == BrokerableAttachment::kNonceSize);
-  for (size_t i = 0; i < BrokerableAttachment::kNonceSize; ++i)
-    start_address[i] = nonce[i];
-}
-
 // BrokerableAttachment::BrokerableAttachment ----------------------------------
 
-BrokerableAttachment::BrokerableAttachment()
-    : id_(AttachmentId::CreateIdWithRandomNonce()) {}
-
-BrokerableAttachment::BrokerableAttachment(const AttachmentId& id) : id_(id) {}
+BrokerableAttachment::BrokerableAttachment() = default;
 
-BrokerableAttachment::~BrokerableAttachment() {}
-
-BrokerableAttachment::AttachmentId BrokerableAttachment::GetIdentifier() const {
-  return id_;
-}
+BrokerableAttachment::~BrokerableAttachment() = default;
 
 bool BrokerableAttachment::NeedsBrokering() const {
   return GetBrokerableType() == PLACEHOLDER;