style: s/getZoneId/getZoneID/g

Acronyms are meant to be in the same case within their part of the camel
case name.

Change-Id: I9e55d4419617a35b0f3a85f3d55543c8fc9bd76f
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/test/pid_zone_unittest.cpp b/test/pid_zone_unittest.cpp
index e358296..82997b9 100644
--- a/test/pid_zone_unittest.cpp
+++ b/test/pid_zone_unittest.cpp
@@ -105,7 +105,7 @@
 {
     // Verifies the zoneId returned is what we expect.
 
-    EXPECT_EQ(zoneId, zone->getZoneId());
+    EXPECT_EQ(zoneId, zone->getZoneID());
 }
 
 TEST_F(PidZoneTest, GetAndSetManualModeTest_BehavesAsExpected)