Rename ZoneInfoDB -> ZoneInfoDb

Rename ZoneInfoDB -> ZoneInfoDb to conform to coding standards.

Bug: 148086409
Test: treehugger
Change-Id: Iada49e00407c427e1da57353bc35e01a7d5cf4f0
diff --git a/debug_tools/host/main/java/ZoneSplitter.java b/debug_tools/host/main/java/ZoneSplitter.java
index 3dd30ff..a8b72e6 100644
--- a/debug_tools/host/main/java/ZoneSplitter.java
+++ b/debug_tools/host/main/java/ZoneSplitter.java
@@ -29,7 +29,7 @@
  * tzdata file. This enables easier debugging / inspection of Android's tzdata file with standard
  * tools like zdump or Android tools like TzFileDumper.
  *
- * <p>This class contains a copy of logic found in Android's ZoneInfoDB.
+ * <p>This class contains a copy of logic found in Android's ZoneInfoDb.
  */
 public class ZoneSplitter {
 
diff --git a/distro/installer/src/main/com/android/timezone/distro/installer/TimeZoneDistroInstaller.java b/distro/installer/src/main/com/android/timezone/distro/installer/TimeZoneDistroInstaller.java
index abcfb8a..c788651 100644
--- a/distro/installer/src/main/com/android/timezone/distro/installer/TimeZoneDistroInstaller.java
+++ b/distro/installer/src/main/com/android/timezone/distro/installer/TimeZoneDistroInstaller.java
@@ -34,7 +34,7 @@
 import libcore.timezone.TzDataSetVersion;
 import libcore.timezone.TzDataSetVersion.TzDataSetException;
 import libcore.timezone.TimeZoneFinder;
-import libcore.timezone.ZoneInfoDB;
+import libcore.timezone.ZoneInfoDb;
 
 /**
  * A distro-validation / extraction class. Separate from the services code that uses it for easier
@@ -209,7 +209,7 @@
 
             // Validate the tzdata file.
             File zoneInfoFile = new File(workingDir, TimeZoneDistro.TZDATA_FILE_NAME);
-            ZoneInfoDB tzData = ZoneInfoDB.loadTzData(zoneInfoFile.getPath());
+            ZoneInfoDb tzData = ZoneInfoDb.loadTzData(zoneInfoFile.getPath());
             if (tzData == null) {
                 Slog.i(logTag, "Update not applied: " + zoneInfoFile + " could not be loaded");
                 return INSTALL_FAIL_VALIDATION_ERROR;