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

tools/clang/blink_gc_plugin/BlinkGCPlugin.cpp

Index: tools/clang/blink_gc_plugin/BlinkGCPlugin.cpp
diff --git a/tools/clang/blink_gc_plugin/BlinkGCPlugin.cpp b/tools/clang/blink_gc_plugin/BlinkGCPlugin.cpp
deleted file mode 100644
index b8d0a44573f8204284f0be5518308dbb0bfd89b4..0000000000000000000000000000000000000000
--- a/tools/clang/blink_gc_plugin/BlinkGCPlugin.cpp
+++ /dev/null
@@ -1,60 +0,0 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// This clang plugin checks various invariants of the Blink garbage
-// collection infrastructure.
-//
-// Errors are described at:
-// http://www.chromium.org/developers/blink-gc-plugin-errors
-
-#include "BlinkGCPluginConsumer.h"
-#include "BlinkGCPluginOptions.h"
-#include "Config.h"
-
-#include "clang/Frontend/CompilerInstance.h"
-#include "clang/Frontend/FrontendPluginRegistry.h"
-
-using namespace clang;
-
-class BlinkGCPluginAction : public PluginASTAction {
- public:
-  BlinkGCPluginAction() {}
-
- protected:
-  // Overridden from PluginASTAction:
-  virtual std::unique_ptr<ASTConsumer> CreateASTConsumer(
-      CompilerInstance& instance,
-      llvm::StringRef ref) {
-    return llvm::make_unique<BlinkGCPluginConsumer>(instance, options_);
-  }
-
-  virtual bool ParseArgs(const CompilerInstance& instance,
-                         const std::vector<std::string>& args) {
-    bool parsed = true;
-
-    for (size_t i = 0; i < args.size() && parsed; ++i) {
-      if (args[i] == "enable-oilpan") {
-        options_.enable_oilpan = true;
-      } else if (args[i] == "dump-graph") {
-        options_.dump_graph = true;
-      } else if (args[i] == "warn-raw-ptr") {
-        options_.warn_raw_ptr = true;
-      } else if (args[i] == "warn-unneeded-finalizer") {
-        options_.warn_unneeded_finalizer = true;
-      } else {
-        parsed = false;
-        llvm::errs() << "Unknown blink-gc-plugin argument: " << args[i] << "\n";
-      }
-    }
-
-    return parsed;
-  }
-
- private:
-  BlinkGCPluginOptions options_;
-};
-
-static FrontendPluginRegistry::Add<BlinkGCPluginAction> X(
-    "blink-gc-plugin",
-    "Check Blink GC invariants");