Initial implementation of "Synced Bookmarks" folder.

chrome/browser/sync/glue/bookmark_model_associator.cc

Index: chrome/browser/sync/glue/bookmark_model_associator.cc
diff --git a/chrome/browser/sync/glue/bookmark_model_associator.cc b/chrome/browser/sync/glue/bookmark_model_associator.cc
index c8395013242dde72c88ab48e2ccda0c9c04fa1a1..c01829bc5b36ecb50cc711f07207200d3835cdee 100644
--- a/chrome/browser/sync/glue/bookmark_model_associator.cc
+++ b/chrome/browser/sync/glue/bookmark_model_associator.cc
@@ -6,6 +6,7 @@
 
 #include <stack>
 
+#include "base/command_line.h"
 #include "base/hash_tables.h"
 #include "base/message_loop.h"
 #include "base/task.h"
@@ -17,6 +18,7 @@
 #include "chrome/browser/sync/syncable/autofill_migration.h"
 #include "chrome/browser/sync/syncable/nigori_util.h"
 #include "chrome/browser/sync/util/cryptographer.h"
+#include "chrome/common/chrome_switches.h"
 #include "content/browser/browser_thread.h"
 
 namespace browser_sync {
@@ -40,6 +42,7 @@ namespace browser_sync {
 // TODO(ncarter): Pull these tags from an external protocol specification
 // rather than hardcoding them here.
 static const char kBookmarkBarTag[] = "bookmark_bar";
+static const char kSyncedBookmarksTag[] = "synced_bookmarks";
 static const char kOtherBookmarksTag[] = "other_bookmarks";
 
 // Bookmark comparer for map of bookmark nodes.
@@ -232,6 +235,7 @@ void BookmarkModelAssociator::Disassociate(int64 sync_id) {
 bool BookmarkModelAssociator::SyncModelHasUserCreatedNodes(bool* has_nodes) {
   DCHECK(has_nodes);
   *has_nodes = false;
+  bool has_synced_folder = true;
   int64 bookmark_bar_sync_id;
   if (!GetSyncIdForTaggedNode(kBookmarkBarTag, &bookmark_bar_sync_id)) {
     return false;
@@ -240,6 +244,10 @@ bool BookmarkModelAssociator::SyncModelHasUserCreatedNodes(bool* has_nodes) {
   if (!GetSyncIdForTaggedNode(kOtherBookmarksTag, &other_bookmarks_sync_id)) {
     return false;
   }
+  int64 synced_bookmarks_sync_id;
+  if (!GetSyncIdForTaggedNode(kSyncedBookmarksTag, &synced_bookmarks_sync_id)) {
+    has_synced_folder = false;
+  }
 
   sync_api::ReadTransaction trans(user_share_);
 
@@ -253,10 +261,18 @@ bool BookmarkModelAssociator::SyncModelHasUserCreatedNodes(bool* has_nodes) {
     return false;
   }
 
+  sync_api::ReadNode synced_bookmarks_node(&trans);
+  if (has_synced_folder &&
+      !synced_bookmarks_node.InitByIdLookup(synced_bookmarks_sync_id)) {
+    return false;
+  }
+
   // Sync model has user created nodes if either one of the permanent nodes
   // has children.
   *has_nodes = bookmark_bar_node.GetFirstChildId() != sync_api::kInvalidId ||
-      other_bookmarks_node.GetFirstChildId() != sync_api::kInvalidId;
+      other_bookmarks_node.GetFirstChildId() != sync_api::kInvalidId ||
+      (has_synced_folder &&
+          synced_bookmarks_node.GetFirstChildId() != sync_api::kInvalidId);
   return true;
 }
 
@@ -346,14 +362,32 @@ bool BookmarkModelAssociator::BuildAssociations() {
                << "are running against an out-of-date server?";
     return false;
   }
+  // We only need to ensure that the "synced bookmarks" folder exists on the
+  // server if the command line flag is set.
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnableSyncedBookmarksFolder) &&
+      !AssociateTaggedPermanentNode(bookmark_model_->synced_node(),
+                                    kSyncedBookmarksTag)) {
+    LOG(ERROR) << "Server did not create top-level synced nodes.  Possibly "
+               << "we are running against an out-of-date server?";
+    return false;
+  }
   int64 bookmark_bar_sync_id = GetSyncIdFromChromeId(
       bookmark_model_->GetBookmarkBarNode()->id());
   DCHECK(bookmark_bar_sync_id != sync_api::kInvalidId);
   int64 other_bookmarks_sync_id = GetSyncIdFromChromeId(
       bookmark_model_->other_node()->id());
   DCHECK(other_bookmarks_sync_id != sync_api::kInvalidId);
+  int64 synced_bookmarks_sync_id = GetSyncIdFromChromeId(
+       bookmark_model_->synced_node()->id());
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnableSyncedBookmarksFolder)) {
+    DCHECK(synced_bookmarks_sync_id != sync_api::kInvalidId);
+  }
 
   std::stack<int64> dfs_stack;
+  if (synced_bookmarks_sync_id != sync_api::kInvalidId)
+    dfs_stack.push(synced_bookmarks_sync_id);
   dfs_stack.push(other_bookmarks_sync_id);
   dfs_stack.push(bookmark_bar_sync_id);
 
@@ -486,14 +520,24 @@ bool BookmarkModelAssociator::LoadAssociations() {
     // We should always be able to find the permanent nodes.
     return false;
   }
+  int64 synced_bookmarks_id = -1;
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnableSyncedBookmarksFolder) &&
+      !GetSyncIdForTaggedNode(kSyncedBookmarksTag, &synced_bookmarks_id)) {
+    // We should always be able to find the permanent nodes.
+    return false;
+  }
 
   // Build a bookmark node ID index since we are going to repeatedly search for
   // bookmark nodes by their IDs.
   BookmarkNodeIdIndex id_index;
   id_index.AddAll(bookmark_model_->GetBookmarkBarNode());
   id_index.AddAll(bookmark_model_->other_node());
+  id_index.AddAll(bookmark_model_->synced_node());
 
   std::stack<int64> dfs_stack;
+  if (synced_bookmarks_id != -1)
+    dfs_stack.push(synced_bookmarks_id);
   dfs_stack.push(other_bookmarks_id);
   dfs_stack.push(bookmark_bar_id);
 
@@ -522,6 +566,7 @@ bool BookmarkModelAssociator::LoadAssociations() {
     // Don't try to call NodesMatch on permanent nodes like bookmark bar and
     // other bookmarks. They are not expected to match.
     if (node != bookmark_model_->GetBookmarkBarNode() &&
+        node != bookmark_model_->synced_node() &&
         node != bookmark_model_->other_node() &&
         !NodesMatch(node, &sync_parent))
       return false;