Remove tools/clang (this will break things temporarily).

tools/clang/blink_gc_plugin/tests/trace_collections.txt

Index: tools/clang/blink_gc_plugin/tests/trace_collections.txt
diff --git a/tools/clang/blink_gc_plugin/tests/trace_collections.txt b/tools/clang/blink_gc_plugin/tests/trace_collections.txt
deleted file mode 100644
index 7c20ad4e4bbe2804b2d56822dd48d0dd1d13ec6d..0000000000000000000000000000000000000000
--- a/tools/clang/blink_gc_plugin/tests/trace_collections.txt
+++ /dev/null
@@ -1,52 +0,0 @@
-trace_collections.cpp:9:1: warning: [blink-gc] Class 'HeapObject' has untraced fields that require tracing.
-void HeapObject::trace(Visitor* visitor)
-^
-./trace_collections.h:16:5: note: [blink-gc] Untraced field 'm_heapVector' declared here:
-    HeapVector<Member<HeapObject> > m_heapVector;
-    ^
-./trace_collections.h:17:5: note: [blink-gc] Untraced field 'm_wtfVector' declared here:
-    Vector<Member<HeapObject>, 0, HeapAllocator> m_wtfVector;
-    ^
-./trace_collections.h:19:5: note: [blink-gc] Untraced field 'm_heapDeque' declared here:
-    HeapDeque<Member<HeapObject> > m_heapDeque;
-    ^
-./trace_collections.h:20:5: note: [blink-gc] Untraced field 'm_wtfDeque' declared here:
-    Deque<Member<HeapObject>, 0, HeapAllocator> m_wtfDeque;
-    ^
-./trace_collections.h:22:5: note: [blink-gc] Untraced field 'm_heapSet' declared here:
-    HeapHashSet<Member<HeapObject> > m_heapSet;
-    ^
-./trace_collections.h:23:5: note: [blink-gc] Untraced field 'm_wtfSet' declared here:
-    HashSet<Member<HeapObject>, void, HeapAllocator> m_wtfSet;
-    ^
-./trace_collections.h:25:5: note: [blink-gc] Untraced field 'm_heapListSet' declared here:
-    HeapListHashSet<Member<HeapObject> > m_heapListSet;
-    ^
-./trace_collections.h:26:5: note: [blink-gc] Untraced field 'm_wtfListSet' declared here:
-    ListHashSet<Member<HeapObject>, void, HeapAllocator> m_wtfListSet;
-    ^
-./trace_collections.h:28:5: note: [blink-gc] Untraced field 'm_heapLinkedSet' declared here:
-    HeapLinkedHashSet<Member<HeapObject> > m_heapLinkedSet;
-    ^
-./trace_collections.h:29:5: note: [blink-gc] Untraced field 'm_wtfLinkedSet' declared here:
-    LinkedHashSet<Member<HeapObject>, void, HeapAllocator> m_wtfLinkedSet;
-    ^
-./trace_collections.h:31:5: note: [blink-gc] Untraced field 'm_heapCountedSet' declared here:
-    HeapHashCountedSet<Member<HeapObject> > m_heapCountedSet;
-    ^
-./trace_collections.h:32:5: note: [blink-gc] Untraced field 'm_wtfCountedSet' declared here:
-    HashCountedSet<Member<HeapObject>, void, HeapAllocator> m_wtfCountedSet;
-    ^
-./trace_collections.h:34:5: note: [blink-gc] Untraced field 'm_heapMapKey' declared here:
-    HeapHashMap<int, Member<HeapObject> > m_heapMapKey;
-    ^
-./trace_collections.h:35:5: note: [blink-gc] Untraced field 'm_heapMapVal' declared here:
-    HeapHashMap<Member<HeapObject>, int > m_heapMapVal;
-    ^
-./trace_collections.h:36:5: note: [blink-gc] Untraced field 'm_wtfMapKey' declared here:
-    HashMap<int, Member<HeapObject>, void, void, void, HeapAllocator>
-    ^
-./trace_collections.h:38:5: note: [blink-gc] Untraced field 'm_wtfMapVal' declared here:
-    HashMap<Member<HeapObject>, int, void, void, void, HeapAllocator>
-    ^
-1 warning generated.