Revert "Roll Clang 214024:216630 (+216684) and switch to CMake (try 2)"

tools/clang/blink_gc_plugin/Makefile

Index: tools/clang/blink_gc_plugin/Makefile
diff --git a/tools/clang/blink_gc_plugin/Makefile b/tools/clang/blink_gc_plugin/Makefile
new file mode 100644
index 0000000000000000000000000000000000000000..0f7043f45f60a58f2fd9823a539689dc4950a67d
--- /dev/null
+++ b/tools/clang/blink_gc_plugin/Makefile
@@ -0,0 +1,21 @@
+# This file requires the clang build system, at least for now. So to use this
+# Makefile, you should execute the following commands to copy this directory
+# into a clang checkout:
+#
+#   cp -R <this directory> third_party/llvm/tools/clang/tools/chrome-plugin
+#   cd third_party/llvm/tools/clang/tools/chrome-plugin
+#   make
+
+CLANG_LEVEL := ../..
+
+# This line is read by update.sh and other scripts in tools/clang/scripts
+LIBRARYNAME = BlinkGCPlugin_9
+
+LINK_LIBS_IN_SHARED = 0
+SHARED_LIBRARY = 1
+
+include $(CLANG_LEVEL)/Makefile
+
+ifeq ($(OS),Darwin)
+  LDFLAGS+=-Wl,-undefined,dynamic_lookup
+endif