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

ipc/ipc_message.h

Index: ipc/ipc_message.h
diff --git a/ipc/ipc_message.h b/ipc/ipc_message.h
index 56c3a46b5e95e215240e605f05891888d00ca0e6..b8689639f262fb4a9fa38803a87511f3cf7a69c5 100644
--- a/ipc/ipc_message.h
+++ b/ipc/ipc_message.h
@@ -15,7 +15,6 @@
 #include "base/pickle.h"
 #include "base/trace_event/trace_event.h"
 #include "build/build_config.h"
-#include "ipc/attachment_broker.h"
 #include "ipc/brokerable_attachment.h"
 #include "ipc/ipc_export.h"
 
@@ -191,34 +190,13 @@ class IPC_EXPORT Message : public base::Pickle {
     // The end address of the message should be used to determine the start
     // address of the next message.
     const char* message_end;
-    // If the message has brokerable attachments, this vector will contain the
-    // ids of the brokerable attachments. The caller of FindNext() is
-    // responsible for adding the attachments to the message.
-    std::vector<BrokerableAttachment::AttachmentId> attachment_ids;
   };
 
-  struct SerializedAttachmentIds {
-    void* buffer;
-    size_t size;
-  };
-  // Creates a buffer that contains a serialization of the ids of the brokerable
-  // attachments of the message. This buffer is intended to be sent over the IPC
-  // channel immediately after the pickled message. The caller takes ownership
-  // of the buffer.
-  // This method should only be called if the message has brokerable
-  // attachments.
-  SerializedAttachmentIds SerializedIdsOfBrokerableAttachments();
-
   // |info| is an output parameter and must not be nullptr.
   static void FindNext(const char* range_start,
                        const char* range_end,
                        NextMessageInfo* info);
 
-  // Adds a placeholder brokerable attachment that must be replaced before the
-  // message can be dispatched.
-  bool AddPlaceholderBrokerableAttachmentWithId(
-      BrokerableAttachment::AttachmentId id);
-
   // WriteAttachment appends |attachment| to the end of the set. It returns
   // false iff the set is full.
   bool WriteAttachment(
@@ -273,12 +251,6 @@ class IPC_EXPORT Message : public base::Pickle {
     int32_t routing;  // ID of the view that this message is destined for
     uint32_t type;    // specifies the user-defined message type
     uint32_t flags;   // specifies control flags for the message
-#if USE_ATTACHMENT_BROKER
-    // The number of brokered attachments included with this message. The
-    // ids of the brokered attachment ids are sent immediately after the pickled
-    // message, before the next pickled message is sent.
-    uint32_t num_brokered_attachments;
-#endif
 #if defined(OS_POSIX)
     uint16_t num_fds; // the number of descriptors included with this message
     uint16_t pad;     // explicitly initialize this to appease valgrind