Componentize tab_node_pool to sync_driver

components/sync_driver/BUILD.gn

Index: components/sync_driver/BUILD.gn
diff --git a/components/sync_driver/BUILD.gn b/components/sync_driver/BUILD.gn
index bedf6c9ae5dbb4e4166fa95d0fbba819473c513a..35705efa0fb635ba8da6c4605f8ad8df7138f5e5 100644
--- a/components/sync_driver/BUILD.gn
+++ b/components/sync_driver/BUILD.gn
@@ -73,6 +73,8 @@ static_library("sync_driver") {
     "sync_service_observer.h",
     "system_encryptor.cc",
     "system_encryptor.h",
+    "tab_node_pool.cc",
+    "tab_node_pool.h",
     "ui_data_type_controller.cc",
     "ui_data_type_controller.h",
     "user_selectable_sync_type.h",
@@ -93,6 +95,19 @@ static_library("sync_driver") {
   }
 }
 
+source_set("unit_tests") {
+  testonly = true
+  sources = [
+    "tab_node_pool_unittest.cc",

[sdefresne, 2015/08/12 07:11:13]

Can you also add the unit tests that are listed in
"sync_driver_unittest_sources" in components/components_tests.gypi here too? The
goal is to have the same unit tests running with gyp and gn.

This can be done as a followup CL if you prefer.

[Abhishek, 2015/08/12 07:49:05]

I'm okay with anything. But IMO its better to raise in follow up CL for bug
http://crbug.com/519366 .

+  ]
+
+  deps = [
+    ":sync_driver",
+    "//sync",
+    "//testing/gtest",
+  ]
+}
+
 static_library("test_support") {
   testonly = true
   sources = [