| Index: chrome/browser/sync_file_system/drive_backend/metadata_db_migration_util.cc
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| diff --git a/chrome/browser/sync_file_system/drive_backend/metadata_db_migration_util.cc b/chrome/browser/sync_file_system/drive_backend/metadata_db_migration_util.cc
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| index 95c094b28df8fa54b332a76144b33d49d82971bc..deafbea36e52984804a5cd58ed477214cb2352e6 100644
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| --- a/chrome/browser/sync_file_system/drive_backend/metadata_db_migration_util.cc
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| +++ b/chrome/browser/sync_file_system/drive_backend/metadata_db_migration_util.cc
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| @@ -46,22 +46,24 @@ SyncStatusCode MigrateDatabaseFromV4ToV3(leveldb::DB* db) {
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|      std::string key = itr->key().ToString();
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|  
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|      // Do nothing for valid entries in both versions.
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| -    if (StartsWithASCII(key, kServiceMetadataKey, true) ||
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| -        StartsWithASCII(key, kFileMetadataKeyPrefix, true) ||
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| -        StartsWithASCII(key, kFileTrackerKeyPrefix, true)) {
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| +    if (base::StartsWithASCII(key, kServiceMetadataKey, true) ||
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| +        base::StartsWithASCII(key, kFileMetadataKeyPrefix, true) ||
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| +        base::StartsWithASCII(key, kFileTrackerKeyPrefix, true)) {
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|        continue;
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|      }
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|  
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|      // Drop entries used in version 4 only.
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| -    if (StartsWithASCII(key, kAppRootIDByAppIDKeyPrefix, true) ||
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| -        StartsWithASCII(key, kActiveTrackerIDByFileIDKeyPrefix, true) ||
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| -        StartsWithASCII(key, kTrackerIDByFileIDKeyPrefix, true) ||
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| -        StartsWithASCII(key, kMultiTrackerByFileIDKeyPrefix, true) ||
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| -        StartsWithASCII(key, kActiveTrackerIDByParentAndTitleKeyPrefix, true) ||
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| -        StartsWithASCII(key, kTrackerIDByParentAndTitleKeyPrefix, true) ||
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| -        StartsWithASCII(key, kMultiBackingParentAndTitleKeyPrefix, true) ||
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| -        StartsWithASCII(key, kDirtyIDKeyPrefix, true) ||
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| -        StartsWithASCII(key, kDemotedDirtyIDKeyPrefix, true)) {
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| +    if (base::StartsWithASCII(key, kAppRootIDByAppIDKeyPrefix, true) ||
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| +        base::StartsWithASCII(key, kActiveTrackerIDByFileIDKeyPrefix, true) ||
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| +        base::StartsWithASCII(key, kTrackerIDByFileIDKeyPrefix, true) ||
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| +        base::StartsWithASCII(key, kMultiTrackerByFileIDKeyPrefix, true) ||
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| +        base::StartsWithASCII(key, kActiveTrackerIDByParentAndTitleKeyPrefix,
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| +                              true) ||
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| +        base::StartsWithASCII(key, kTrackerIDByParentAndTitleKeyPrefix, true) ||
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| +        base::StartsWithASCII(key, kMultiBackingParentAndTitleKeyPrefix,
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| +                              true) ||
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| +        base::StartsWithASCII(key, kDirtyIDKeyPrefix, true) ||
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| +        base::StartsWithASCII(key, kDemotedDirtyIDKeyPrefix, true)) {
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|        write_batch.Delete(key);
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|        continue;
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|      }
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| 
 |