Generalize rebase-errors.py so it works for other files.

net/cert/internal/path_builder_unittest.cc

 // Copyright 2016 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.
 
 #include "net/cert/internal/path_builder.h"
 
 #include "base/base_paths.h"
 #include "base/cancelable_callback.h"
 #include "base/files/file_util.h"
 #include "base/location.h"
@@ skipping 479 matching lines @@
 
 class PathBuilderKeyRolloverTest : public ::testing::Test {
  public:
   PathBuilderKeyRolloverTest() : signature_policy_(1024) {}
 
   void SetUp() override {
     ParsedCertificateList path;
     bool unused_result;
     std::string unused_errors;
 
-    ReadVerifyCertChainTestFromFile("key-rollover-oldchain.pem", &path,
-                                    &oldroot_, &time_, &unused_result,
-                                    &unused_errors);
+    ReadVerifyCertChainTestFromFile(
+        "net/data/verify_certificate_chain_unittest/key-rollover-oldchain.pem",
+        &path, &oldroot_, &time_, &unused_result, &unused_errors);
     ASSERT_EQ(2U, path.size());
     target_ = path[0];
     oldintermediate_ = path[1];
     ASSERT_TRUE(target_);
     ASSERT_TRUE(oldintermediate_);
 
-    ReadVerifyCertChainTestFromFile("key-rollover-longrolloverchain.pem", &path,
-                                    &oldroot_, &time_, &unused_result,
-                                    &unused_errors);
+    ReadVerifyCertChainTestFromFile(
+        "net/data/verify_certificate_chain_unittest/"
+        "key-rollover-longrolloverchain.pem",
+        &path, &oldroot_, &time_, &unused_result, &unused_errors);
     ASSERT_EQ(4U, path.size());
     newintermediate_ = path[1];
     newroot_ = path[2];
     newrootrollover_ = path[3];
     ASSERT_TRUE(newintermediate_);
     ASSERT_TRUE(newroot_);
     ASSERT_TRUE(newrootrollover_);
   }
 
  protected:
@@ skipping 765 matching lines @@
   const auto& path1 = result.paths[1]->path;
   ASSERT_EQ(2U, path1.certs.size());
   EXPECT_EQ(target_, path1.certs[0]);
   EXPECT_EQ(newintermediate_, path1.certs[1]);
   EXPECT_EQ(newroot_, path1.trust_anchor->cert());
 }
 
 }  // namespace
 
 }  // namespace net