sync: Re-implement getAllNodes WebUI function

sync/sessions/model_type_registry.cc

Index: sync/sessions/model_type_registry.cc
diff --git a/sync/sessions/model_type_registry.cc b/sync/sessions/model_type_registry.cc
index f93cba3e32ed3bc0d7e1712be536d5884ea22841..4bf374ed272c96be3cd6bf5d97f3aa6a1cdba79a 100644
--- a/sync/sessions/model_type_registry.cc
+++ b/sync/sessions/model_type_registry.cc
@@ -7,6 +7,7 @@
 #include "base/bind.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "sync/engine/directory_commit_contributor.h"
+#include "sync/engine/directory_type_debug_info_emitter.h"
 #include "sync/engine/directory_update_handler.h"
 #include "sync/engine/non_blocking_type_processor_core.h"
 #include "sync/internal_api/public/non_blocking_type_processor.h"
@@ -34,14 +35,17 @@ void ModelTypeRegistry::SetEnabledDirectoryTypes(
        it.Good(); it.Inc()) {
     size_t result1 = update_handler_map_.erase(it.Get());
     size_t result2 = commit_contributor_map_.erase(it.Get());
+    size_t result3 = directory_type_debug_info_emitter_map_.erase(it.Get());
     DCHECK_EQ(1U, result1);
     DCHECK_EQ(1U, result2);
+    DCHECK_EQ(1U, result3);
   }
 
   // Clear the old instances of directory update handlers and commit
   // contributors, deleting their contents in the processs.
   directory_update_handlers_.clear();
   directory_commit_contributors_.clear();
+  directory_type_debug_info_emitters_.clear();
 
   // Create new ones and add them to the appropriate containers.
   for (ModelSafeRoutingInfo::const_iterator routing_iter = routing_info.begin();
@@ -57,10 +61,13 @@ void ModelTypeRegistry::SetEnabledDirectoryTypes(
         new DirectoryCommitContributor(directory_, type);
     DirectoryUpdateHandler* updater =
         new DirectoryUpdateHandler(directory_, type, worker);
+    DirectoryTypeDebugInfoEmitter* emitter =
+        new DirectoryTypeDebugInfoEmitter(directory_, type);
 
     // These containers take ownership of their contents.
     directory_commit_contributors_.push_back(committer);
     directory_update_handlers_.push_back(updater);
+    directory_type_debug_info_emitters_.push_back(emitter);
 
     bool inserted1 =
         update_handler_map_.insert(std::make_pair(type, updater)).second;
@@ -69,6 +76,11 @@ void ModelTypeRegistry::SetEnabledDirectoryTypes(
     bool inserted2 =
         commit_contributor_map_.insert(std::make_pair(type, committer)).second;
     DCHECK(inserted2) << "Attempt to override existing type handler in map";
+
+    bool inserted3 =
+        directory_type_debug_info_emitter_map_.insert(
+            std::make_pair(type, emitter)).second;
+    DCHECK(inserted3) << "Attempt to override existing type handler in map";
   }
 
   enabled_directory_types_ = GetRoutingInfoTypes(routing_info);
@@ -142,6 +154,11 @@ CommitContributorMap* ModelTypeRegistry::commit_contributor_map() {
   return &commit_contributor_map_;
 }
 
+DirectoryTypeDebugInfoEmitterMap*
+ModelTypeRegistry::directory_type_debug_info_emitter_map() {
+  return &directory_type_debug_info_emitter_map_;
+}
+
 ModelTypeSet ModelTypeRegistry::GetEnabledDirectoryTypes() const {
   return enabled_directory_types_;
 }