Add use-chromium-style-naming option to Blink GC plugin.

tools/clang/blink_gc_plugin/tests/legacy_naming/base_class_must_define_virtual_trace.txt

Index: tools/clang/blink_gc_plugin/tests/legacy_naming/base_class_must_define_virtual_trace.txt
diff --git a/tools/clang/blink_gc_plugin/tests/legacy_naming/base_class_must_define_virtual_trace.txt b/tools/clang/blink_gc_plugin/tests/legacy_naming/base_class_must_define_virtual_trace.txt
new file mode 100644
index 0000000000000000000000000000000000000000..f8276eb23ce948d22fc599bbcf4b146e2f31bdb5
--- /dev/null
+++ b/tools/clang/blink_gc_plugin/tests/legacy_naming/base_class_must_define_virtual_trace.txt
@@ -0,0 +1,8 @@
+In file included from base_class_must_define_virtual_trace.cpp:5:
+./base_class_must_define_virtual_trace.h:12:1: warning: [blink-gc] Left-most base class 'PartBase' of derived class 'PartDerived' must define a virtual trace method.
+class PartBase {
+^
+./base_class_must_define_virtual_trace.h:23:1: warning: [blink-gc] Left-most base class 'HeapBase' of derived class 'HeapDerived' must define a virtual trace method.
+class HeapBase : public GarbageCollected<HeapBase> {
+^
+2 warnings generated.

[dcheng, 2016/12/20 08:52:18]

Rietveld picked up most of these as moves, but some show as copies.

This directory is basically a straight copy of the old tests directory, with the
exception of minor relative path fixes in test.py.