Unify gyp rules for running protoc.

remoting/proto/trace.gyp

Index: remoting/proto/trace.gyp
diff --git a/remoting/proto/trace.gyp b/remoting/proto/trace.gyp
index a77947b3732cd8086efc8339bc048fc64de5b1e3..084c810e2a19dee33765fad2020463eed4118952 100644
--- a/remoting/proto/trace.gyp
+++ b/remoting/proto/trace.gyp
@@ -5,70 +5,18 @@
 {
   'variables': {
     'chromium_code': 1,
-    'out_dir': '<(SHARED_INTERMEDIATE_DIR)/protoc_out/remoting/proto',
   },
   'targets': [
     {
-      # Protobuf compiler / generate rule for trace.proto.
-      'target_name': 'trace_proto',
-      'type': 'none',
-      'sources': [
-        'trace.proto',
-      ],
-      'rules': [
-        {
-          'rule_name': 'genproto',
-          'extension': 'proto',
-          'inputs': [
-            '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)protoc<(EXECUTABLE_SUFFIX)',
-          ],
-          'outputs': [
-            '<(PRODUCT_DIR)/pyproto/<(RULE_INPUT_ROOT)_pb/'
-               '<(RULE_INPUT_ROOT)_pb2.py',
-            '<(out_dir)/<(RULE_INPUT_ROOT).pb.cc',
-            '<(out_dir)/<(RULE_INPUT_ROOT).pb.h',
-          ],
-          'action': [
-            '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)protoc<(EXECUTABLE_SUFFIX)',
-            '--proto_path=.',
-            './<(RULE_INPUT_ROOT)<(RULE_INPUT_EXT)',
-            '--cpp_out=<(out_dir)',
-            '--python_out=<(PRODUCT_DIR)/pyproto/<(RULE_INPUT_ROOT)_pb',
-          ],
-          'message': 'Generating C++ and Python code from <(RULE_INPUT_PATH)',
-        },
-      ],
-      'dependencies': [
-        '<(DEPTH)/third_party/protobuf/protobuf.gyp:protoc#host',
-      ],
-      # This target exports a hard dependency because it generates header
-      # files.
-      'hard_dependency': 1,
-    },
-
-    {
       'target_name': 'trace_proto_lib',
       'type': 'static_library',
-      'export_dependent_settings': [
-        '<(DEPTH)/third_party/protobuf/protobuf.gyp:protobuf_lite',
-        'trace_proto',
-      ],
-      'dependencies': [
-        '<(DEPTH)/third_party/protobuf/protobuf.gyp:protobuf_lite',
-        'trace_proto',
-      ],
-      # This target exports a hard dependency because depedents require
-      # chromotocol_proto to compile.
-      'hard_dependency': 1,
-      'direct_dependent_settings': {
-        'include_dirs': [
-          '<(SHARED_INTERMEDIATE_DIR)/protoc_out',
-        ],
-      },
       'sources': [
-        '<(out_dir)/trace.pb.cc',
-        '<(out_dir)/trace.pb.h',
+        'trace.proto',
       ],
+      'variables': {
+        'proto_out_dir': 'remoting/proto',
+      },
+      'includes': ['../../build/protoc.gypi'],
     },
   ],
 }