Rename some files to avoid conflicting .obj files on Windows
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index 8d38d9a..67312d7 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -956,32 +956,32 @@
 src/cpp/common/secure_channel_arguments.cc \
 src/cpp/common/secure_create_auth_context.cc \
 src/cpp/server/secure_server_credentials.cc \
-src/cpp/client/channel.cc \
+src/cpp/client/channel_cc.cc \
 src/cpp/client/client_context.cc \
 src/cpp/client/create_channel.cc \
 src/cpp/client/create_channel_internal.cc \
 src/cpp/client/create_channel_posix.cc \
-src/cpp/client/credentials.cc \
+src/cpp/client/credentials_cc.cc \
 src/cpp/client/generic_stub.cc \
 src/cpp/client/insecure_credentials.cc \
 src/cpp/common/channel_arguments.cc \
-src/cpp/common/completion_queue.cc \
+src/cpp/common/completion_queue_cc.cc \
 src/cpp/common/core_codegen.cc \
 src/cpp/common/rpc_method.cc \
 src/cpp/server/async_generic_service.cc \
 src/cpp/server/create_default_thread_pool.cc \
 src/cpp/server/dynamic_thread_pool.cc \
 src/cpp/server/insecure_server_credentials.cc \
-src/cpp/server/server.cc \
 src/cpp/server/server_builder.cc \
+src/cpp/server/server_cc.cc \
 src/cpp/server/server_context.cc \
 src/cpp/server/server_credentials.cc \
 src/cpp/server/server_posix.cc \
-src/cpp/util/byte_buffer.cc \
-src/cpp/util/slice.cc \
+src/cpp/util/byte_buffer_cc.cc \
+src/cpp/util/slice_cc.cc \
 src/cpp/util/status.cc \
 src/cpp/util/string_ref.cc \
-src/cpp/util/time.cc \
+src/cpp/util/time_cc.cc \
 src/core/lib/channel/channel_args.c \
 src/core/lib/channel/channel_stack.c \
 src/core/lib/channel/channel_stack_builder.c \
diff --git a/tools/run_tests/sanity/check_sources_and_headers.py b/tools/run_tests/sanity/check_sources_and_headers.py
index c028499..5246409 100755
--- a/tools/run_tests/sanity/check_sources_and_headers.py
+++ b/tools/run_tests/sanity/check_sources_and_headers.py
@@ -62,7 +62,8 @@
 def produces_object(name):
   return os.path.splitext(name)[1] in ['.c', '.cc']
 
-obj_producer_to_source = {'c': {}, 'c++': {}, 'csharp': {}}
+c_ish = {}
+obj_producer_to_source = {'c': c_ish, 'c++': c_ish, 'csharp': {}}
 
 errors = 0
 for target in js:
@@ -85,7 +86,7 @@
               'target %s (%s) does not name header %s as a dependency' % (
                 target['name'], fn, m.group(1)))
             errors += 1
-  if target['type'] == 'lib':
+  if target['type'] in ['lib', 'filegroup']:
     for fn in target['src']:
       language = target['language']
       if produces_object(fn):
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index cd1757a..9295a2a 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -4392,8 +4392,8 @@
     "language": "c++", 
     "name": "grpc++_test_config", 
     "src": [
-      "test/cpp/util/test_config.cc", 
-      "test/cpp/util/test_config.h"
+      "test/cpp/util/test_config.h", 
+      "test/cpp/util/test_config_cc.cc"
     ], 
     "third_party": false, 
     "type": "lib"
@@ -6605,17 +6605,17 @@
       "include/grpc++/support/stub_options.h", 
       "include/grpc++/support/sync_stream.h", 
       "include/grpc++/support/time.h", 
-      "src/cpp/client/channel.cc", 
+      "src/cpp/client/channel_cc.cc", 
       "src/cpp/client/client_context.cc", 
       "src/cpp/client/create_channel.cc", 
       "src/cpp/client/create_channel_internal.cc", 
       "src/cpp/client/create_channel_internal.h", 
       "src/cpp/client/create_channel_posix.cc", 
-      "src/cpp/client/credentials.cc", 
+      "src/cpp/client/credentials_cc.cc", 
       "src/cpp/client/generic_stub.cc", 
       "src/cpp/client/insecure_credentials.cc", 
       "src/cpp/common/channel_arguments.cc", 
-      "src/cpp/common/completion_queue.cc", 
+      "src/cpp/common/completion_queue_cc.cc", 
       "src/cpp/common/core_codegen.cc", 
       "src/cpp/common/rpc_method.cc", 
       "src/cpp/server/async_generic_service.cc", 
@@ -6623,17 +6623,17 @@
       "src/cpp/server/dynamic_thread_pool.cc", 
       "src/cpp/server/dynamic_thread_pool.h", 
       "src/cpp/server/insecure_server_credentials.cc", 
-      "src/cpp/server/server.cc", 
       "src/cpp/server/server_builder.cc", 
+      "src/cpp/server/server_cc.cc", 
       "src/cpp/server/server_context.cc", 
       "src/cpp/server/server_credentials.cc", 
       "src/cpp/server/server_posix.cc", 
       "src/cpp/server/thread_pool_interface.h", 
-      "src/cpp/util/byte_buffer.cc", 
-      "src/cpp/util/slice.cc", 
+      "src/cpp/util/byte_buffer_cc.cc", 
+      "src/cpp/util/slice_cc.cc", 
       "src/cpp/util/status.cc", 
       "src/cpp/util/string_ref.cc", 
-      "src/cpp/util/time.cc"
+      "src/cpp/util/time_cc.cc"
     ], 
     "third_party": false, 
     "type": "filegroup"