Rename async_execution_lock --> combiner, make it use closures, unroll previous changes for idleness
diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
index c922e48..4b0a7a0 100644
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
@@ -46,10 +46,10 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\http\parser.c">
       <Filter>src\core\lib\http</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\async_execution_lock.c">
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\closure.c">
       <Filter>src\core\lib\iomgr</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\closure.c">
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\combiner.c">
       <Filter>src\core\lib\iomgr</Filter>
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint.c">
@@ -605,10 +605,10 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\http\parser.h">
       <Filter>src\core\lib\http</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\async_execution_lock.h">
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\closure.h">
       <Filter>src\core\lib\iomgr</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\closure.h">
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\combiner.h">
       <Filter>src\core\lib\iomgr</Filter>
     </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint.h">