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

net/cert/internal/trust_store_collection_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/trust_store_collection.h"
 
 #include "base/bind.h"
 #include "net/cert/internal/test_helpers.h"
 #include "net/cert/internal/trust_store_test_helpers.h"
 #include "testing/gmock/include/gmock/gmock.h"
@@ skipping 21 matching lines @@
 };
 
 class TrustStoreCollectionTest : public testing::Test {
  public:
   void SetUp() override {
     ParsedCertificateList chain;
     bool unused_verify_result;
     der::GeneralizedTime unused_time;
     std::string unused_errors;
 
-    ReadVerifyCertChainTestFromFile("key-rollover-oldchain.pem", &chain,
-                                    &oldroot_, &unused_time,
-                                    &unused_verify_result, &unused_errors);
+    ReadVerifyCertChainTestFromFile(
+        "net/data/verify_certificate_chain_unittest/key-rollover-oldchain.pem",
+        &chain, &oldroot_, &unused_time, &unused_verify_result, &unused_errors);
     ASSERT_EQ(2U, chain.size());
     target_ = chain[0];
     oldintermediate_ = chain[1];
     ASSERT_TRUE(target_);
     ASSERT_TRUE(oldintermediate_);
     ASSERT_TRUE(oldroot_);
 
     scoped_refptr<TrustAnchor> unused_root;
-    ReadVerifyCertChainTestFromFile("key-rollover-longrolloverchain.pem",
-                                    &chain, &unused_root, &unused_time,
-                                    &unused_verify_result, &unused_errors);
+    ReadVerifyCertChainTestFromFile(
+        "net/data/verify_certificate_chain_unittest/"
+        "key-rollover-longrolloverchain.pem",
+        &chain, &unused_root, &unused_time, &unused_verify_result,
+        &unused_errors);
     ASSERT_EQ(4U, chain.size());
     newintermediate_ = chain[1];
     newroot_ = TrustAnchor::CreateFromCertificateNoConstraints(chain[2]);
     newrootrollover_ =
         TrustAnchor::CreateFromCertificateNoConstraints(chain[3]);
     ASSERT_TRUE(newintermediate_);
     ASSERT_TRUE(newroot_);
     ASSERT_TRUE(newrootrollover_);
   }
 
@@ skipping 154 matching lines @@
   EXPECT_EQ(oldroot_, sync_matches[1]);
 
   anchor_results.Run();
   ASSERT_EQ(1U, anchor_results.matches().size());
   EXPECT_EQ(newroot_, anchor_results.matches()[0]);
 }
 
 }  // namespace
 
 }  // namespace net