Adds routed interface support between RenderFrameHost and RenderFrame

content/child/child_thread_impl.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 "content/child/child_thread_impl.h"
 
 #include <signal.h>
 #include <string>
 #include <utility>
 
@@ skipping 360 matching lines @@
   if (!handled && msg.is_sync()) {
     IPC::Message* reply = IPC::SyncMessage::GenerateReply(&msg);
     reply->set_reply_error();
     Send(reply);
   }
 #endif
   return handled;
 }
 
 ChildThreadImpl::ChildThreadImpl()
-    : router_(this),
+    : route_provider_binding_(this),
+      associated_interface_provider_bindings_(
+          mojo::BindingSetDispatchMode::WITH_CONTEXT),
+      router_(this),
       channel_connected_factory_(
           new base::WeakPtrFactory<ChildThreadImpl>(this)),
       weak_factory_(this) {
   Init(Options::Builder().Build());
 }
 
 ChildThreadImpl::ChildThreadImpl(const Options& options)
-    : router_(this),
+    : route_provider_binding_(this),
+      associated_interface_provider_bindings_(
+          mojo::BindingSetDispatchMode::WITH_CONTEXT),
+      router_(this),
       browser_process_io_runner_(options.browser_process_io_runner),
       channel_connected_factory_(
           new base::WeakPtrFactory<ChildThreadImpl>(this)),
       weak_factory_(this) {
   Init(options);
 }
 
 scoped_refptr<base::SequencedTaskRunner> ChildThreadImpl::GetIOTaskRunner() {
   if (IsInBrowserProcess())
     return browser_process_io_runner_;
@@ skipping 159 matching lines @@
   for (auto* startup_filter : options.startup_filters) {
     channel_->AddFilter(startup_filter);
   }
 
   IPC::AttachmentBroker* broker = IPC::AttachmentBroker::GetGlobal();
   if (broker && !broker->IsPrivilegedBroker())
     broker->RegisterBrokerCommunicationChannel(channel_.get());
 
   ConnectChannel(options.use_mojo_channel);
 
+  channel_->AddAssociatedInterface(
+      base::Bind(&ChildThreadImpl::OnRouteProviderRequest,
+                 base::Unretained(this)));
+
   // This must always be done after ConnectChannel, because ConnectChannel() may
   // add a ConnectionFilter to the connection.
   if (options.auto_start_mojo_shell_connection && mojo_shell_connection_)
     StartMojoShellConnection();
 
   int connection_timeout = kConnectionTimeoutS;
   std::string connection_override =
       base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
           switches::kIPCConnectionTimeout);
   if (!connection_override.empty()) {
@@ skipping 111 matching lines @@
   if (!remote_interfaces_.get())
     remote_interfaces_.reset(new shell::InterfaceProvider);
   return remote_interfaces_.get();
 }
 
 IPC::MessageRouter* ChildThreadImpl::GetRouter() {
   DCHECK(message_loop_->task_runner()->BelongsToCurrentThread());
   return &router_;
 }
 
+mojom::RouteProvider* ChildThreadImpl::GetRemoteRouteProvider() {
+  if (!remote_route_provider_) {
+    DCHECK(channel_);
+    channel_->GetRemoteAssociatedInterface(&remote_route_provider_);
+  }
+  return remote_route_provider_.get();
+}
+
 std::unique_ptr<base::SharedMemory> ChildThreadImpl::AllocateSharedMemory(
     size_t buf_size) {
   DCHECK(message_loop_->task_runner()->BelongsToCurrentThread());
   return AllocateSharedMemory(buf_size, this, nullptr);
 }
 
 // static
 std::unique_ptr<base::SharedMemory> ChildThreadImpl::AllocateSharedMemory(
     size_t buf_size,
     IPC::Sender* sender,
@@ skipping 132 matching lines @@
   // race conditions if the process refcount is 0 but there's an IPC message
   // inflight that would addref it.
   Send(new ChildProcessHostMsg_ShutdownRequest);
 }
 
 void ChildThreadImpl::EnsureConnected() {
   VLOG(0) << "ChildThreadImpl::EnsureConnected()";
   base::Process::Current().Terminate(0, false);
 }
 
+void ChildThreadImpl::OnRouteProviderRequest(
+    mojom::RouteProviderAssociatedRequest request) {
+  DCHECK(!route_provider_binding_.is_bound());
+  route_provider_binding_.Bind(std::move(request));
+}
+
+void ChildThreadImpl::GetRoute(
+    int32_t routing_id,
+    mojom::AssociatedInterfaceProviderAssociatedRequest request) {
+  associated_interface_provider_bindings_.AddBinding(
+      this, std::move(request),
+      reinterpret_cast<void*>(static_cast<uintptr_t>(routing_id)));
+}
+
+void ChildThreadImpl::GetAssociatedInterface(
+    const std::string& name,
+    mojom::AssociatedInterfaceAssociatedRequest request) {
+  int32_t routing_id = static_cast<int32_t>(reinterpret_cast<uintptr_t>(
+      associated_interface_provider_bindings_.dispatch_context()));
+  router_.GetRoute(routing_id)->OnAssociatedInterfaceRequest(
+      name, request.PassHandle());
+}
+
 bool ChildThreadImpl::IsInBrowserProcess() const {
   return static_cast<bool>(browser_process_io_runner_);
 }
 
 }  // namespace content