Revert of Properly escape node names in DependencyGraph Graphviz export

components/keyed_service/core/dependency_graph_unittest.cc

Index: components/keyed_service/core/dependency_graph_unittest.cc
diff --git a/components/keyed_service/core/dependency_graph_unittest.cc b/components/keyed_service/core/dependency_graph_unittest.cc
index 10168d03c5f5e6e8f5c6a2e4eeba65486c06e268..3bf175834065728ef6b0d1e99d1d6259c9180e2e 100644
--- a/components/keyed_service/core/dependency_graph_unittest.cc
+++ b/components/keyed_service/core/dependency_graph_unittest.cc
@@ -2,12 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "base/bind.h"
-#include "base/strings/string_piece.h"
 #include "components/keyed_service/core/dependency_graph.h"
 #include "components/keyed_service/core/dependency_node.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include "third_party/re2/re2/re2.h"
 
 namespace {
 
@@ -158,55 +155,4 @@
   EXPECT_EQ(&parent, destruction_order[3]);
 }
 
-std::string NodeNameProvider(const std::string& name, DependencyNode* node) {
-  return name;
-}
-
-// When this returns true, then |name| is a valid ID according to the DOT
-// language specification [1]. Note that DOT language also allows HTML strings
-// as valid identifiers, but those are not used in the production code calling
-// the tested DumpAsGraphviz.
-// [1] http://www.graphviz.org/content/dot-language
-bool IsValidDotId(base::StringPiece name) {
-  static const char pattern[] =
-      "[a-zA-Z\\200-\\377_][0-9a-zA-Z\\200-\\377_]*"
-      "|-?(?:\\.[0-9]+|[0-9]+(\\.[0-9]*)?)"
-      "|\"(?:[^\"]|\\\")*\"";
-  return RE2::FullMatch(re2::StringPiece(name.data(), name.size()), pattern);
-}
-
-// Returns the source name of the first edge of the graphstr described in DOT
-// format in |graphstr|.
-base::StringPiece LocateNodeNameInGraph(base::StringPiece graphstr) {
-  re2::StringPiece name;
-  EXPECT_TRUE(RE2::FullMatch(
-      re2::StringPiece(graphstr.data(), graphstr.size()),
-      "(?sm).*^[ \\t]*([^ \\t]*(?:[ \\t]+[^ \\t]+)*)[ \\t]*->.*", &name))
-      << "graphstr=" << graphstr;
-  return base::StringPiece(name.data(), name.size());
-}
-
-// Node names in the dependency graph should be properly escaped.
-TEST_F(DependencyGraphTest, DumpAsGraphviz_Escaping) {
-  const char* names[] = {
-      "namespace::Service",           "justAlphabeticService",
-      "Service_with_underscores",     "AlphaNumeric123Service",
-      "123ServiceStartingWithDigits", "service with spaces",
-      "ServiceWith\"Quotes"};
-
-  DependencyGraph graph;
-  DummyNode parent(&graph);
-  DummyNode child(&graph);
-
-  graph.AddEdge(&parent, &child);
-
-  for (const char* name : names) {
-    SCOPED_TRACE(testing::Message("name=") << name);
-    std::string graph_str =
-        graph.DumpAsGraphviz("Test", base::Bind(&NodeNameProvider, name));
-    base::StringPiece dumped_name(LocateNodeNameInGraph(graph_str));
-    EXPECT_TRUE(IsValidDotId(dumped_name)) << "dumped_name=" << dumped_name;
-  }
-}
-
 }  // namespace