Set user-visible machine names and devices types for synced sessions.

chrome/browser/sync/glue/session_model_associator.h

Index: chrome/browser/sync/glue/session_model_associator.h
diff --git a/chrome/browser/sync/glue/session_model_associator.h b/chrome/browser/sync/glue/session_model_associator.h
index 957914077c88c591cc34f5e7f4e8b9d79e3008e5..561f1b5664cd487deacddda117f75c6a366d46ba 100644
--- a/chrome/browser/sync/glue/session_model_associator.h
+++ b/chrome/browser/sync/glue/session_model_associator.h
@@ -14,6 +14,7 @@
 #include "base/format_macros.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_vector.h"
+#include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/stringprintf.h"
 #include "base/threading/non_thread_safe.h"
@@ -27,6 +28,7 @@
 #include "chrome/browser/sync/glue/synced_window_delegate.h"
 #include "chrome/browser/sync/protocol/session_specifics.pb.h"
 #include "chrome/browser/sync/syncable/model_type.h"
+#include "chrome/browser/sync/weak_handle.h"
 
 class Profile;
 class ProfileSyncService;
@@ -50,6 +52,7 @@ static const char kSessionsTag[] = "google_chrome_sessions";
 // the sync sessions model.
 class SessionModelAssociator
     : public PerDataTypeAssociatorInterface<SyncedTabDelegate, size_t>,
+      public base::SupportsWeakPtr<SessionModelAssociator>,
       public base::NonThreadSafe {
  public:
   // Does not take ownership of sync_service.
@@ -183,6 +186,23 @@ class SessionModelAssociator
   // when a local change is made, or when timeout_milli occurs, whichever is
   // first.
   void BlockUntilLocalChangeForTest(int64 timeout_milli);
+
+  // Callback for when the session name has been computed.
+  void OnSessionNameInitialized(const std::string name);
+
+#if defined(OS_WIN)
+  // Returns the computer name or the empty string an error occurred.
+  static std::string GetComputerName();
+#endif
+
+#if defined(OS_MACOSX)
+  // Returns the Hardware model name, without trailing numbers, if possible.
+  // See http://www.cocoadev.com/index.pl?MacintoshModels for an example list of
+  // models. If an error occurs trying to read the model, this simply returns
+  // "Unknown".
+  static std::string GetHardwareModelName();
+#endif
+
  private:
   FRIEND_TEST_ALL_PREFIXES(ProfileSyncServiceSessionTest, WriteSessionToNode);
   FRIEND_TEST_ALL_PREFIXES(ProfileSyncServiceSessionTest,
@@ -191,8 +211,11 @@ class SessionModelAssociator
                            WriteForeignSessionToNode);
   FRIEND_TEST_ALL_PREFIXES(ProfileSyncServiceSessionTest, TabNodePoolEmpty);
   FRIEND_TEST_ALL_PREFIXES(ProfileSyncServiceSessionTest, TabNodePoolNonEmpty);
+  FRIEND_TEST_ALL_PREFIXES(SessionModelAssociatorTest, PopulateSessionHeader);
   FRIEND_TEST_ALL_PREFIXES(SessionModelAssociatorTest, PopulateSessionWindow);
   FRIEND_TEST_ALL_PREFIXES(SessionModelAssociatorTest, PopulateSessionTab);
+  FRIEND_TEST_ALL_PREFIXES(SessionModelAssociatorTest,
+                           InitializeCurrentSessionName);
 
   // Keep all the links to local tab data in one place.
   class TabLinks {
@@ -321,6 +344,9 @@ class SessionModelAssociator
   // Initializes the tag corresponding to this machine.
   void InitializeCurrentMachineTag(sync_api::WriteTransaction* trans);
 
+  // Initializes the user visible name for this session
+  void InitializeCurrentSessionName();
+
   // Updates the server data based upon the current client session.  If no node
   // corresponding to this machine exists in the sync model, one is created.
   void UpdateSyncModelDataFromClient();
@@ -338,6 +364,12 @@ class SessionModelAssociator
                                    const int64 sync_id,
                                    sync_api::WriteTransaction* trans);
 
+  // Used to populate a session header from the session specifics header
+  // provided.
+  static void PopulateSessionHeaderFromSpecifics(
+    const sync_pb::SessionHeader& header_specifics,
+    SyncedSession* session_header);
+
   // Used to populate a session window from the session specifics window
   // provided. Tracks any foreign session data created through |tracker|.
   static void PopulateSessionWindowFromSpecifics(
@@ -395,9 +427,12 @@ class SessionModelAssociator
   // For testing only.
   void QuitLoopForTest();
 
-  // Local client name.
+  // Unique client tag.
   std::string current_machine_tag_;
 
+  // User-visible machine name.
+  std::string current_session_name_;
+
   // Pool of all used/available sync nodes associated with tabs.
   TabNodePool tab_pool_;