Add support for X11 workspaces

components/sessions/core/session_service_commands.cc

Index: components/sessions/core/session_service_commands.cc
diff --git a/components/sessions/core/session_service_commands.cc b/components/sessions/core/session_service_commands.cc
index 5d3cbf4ddc3b6818b54c148e234c7aa56cb9ca68..ca02f49e881f7e068ee42901490e71e9a14fd882 100644
--- a/components/sessions/core/session_service_commands.cc
+++ b/components/sessions/core/session_service_commands.cc
@@ -42,6 +42,7 @@ static const SessionCommand::id_type kCommandSetTabUserAgentOverride = 18;
 static const SessionCommand::id_type kCommandSessionStorageAssociated = 19;
 static const SessionCommand::id_type kCommandSetActiveWindow = 20;
 static const SessionCommand::id_type kCommandLastActiveTime = 21;
+static const SessionCommand::id_type kCommandSetWindowWorkspace = 22;
 
 namespace {
 
@@ -580,6 +581,21 @@ bool CreateTabsAndWindows(const ScopedVector<SessionCommand>& data,
         break;
       }
 
+      case kCommandSetWindowWorkspace: {
+        std::unique_ptr<base::Pickle> pickle(command->PayloadAsPickle());
+        base::PickleIterator it(*pickle);
+        const SessionID::id_type* window_id;
+        std::string workspace;
+        if (!it.ReadBytes(reinterpret_cast<const char**>(&window_id),
+                          sizeof(*window_id)) ||
+            !it.ReadString(&workspace)) {
+          DVLOG(1) << "Failed reading command " << command->id();
+          return true;
+        }
+        GetWindow(*window_id, windows)->workspace = workspace;
+        break;
+      }
+
       default:
         // TODO(skuhne): This might call back into a callback handler to extend
         // the command set for specific implementations.
@@ -739,6 +755,18 @@ std::unique_ptr<SessionCommand> CreateLastActiveTimeCommand(
   return command;
 }
 
+std::unique_ptr<SessionCommand> CreateSetWindowWorkspaceCommand(
+    const SessionID& window_id,
+    const std::string& workspace) {
+  base::Pickle pickle;
+  pickle.WriteBytes(static_cast<const void*>(&window_id), sizeof(window_id));
+  pickle.WriteString(workspace);
+  std::unique_ptr<SessionCommand> command(
+      new SessionCommand(kCommandSetWindowWorkspace, pickle.size()));
+  memcpy(command->contents(), pickle.data(), pickle.size());
+  return command;
+}
+
 std::unique_ptr<SessionCommand> CreateTabNavigationPathPrunedFromBackCommand(
     const SessionID& tab_id,
     int count) {