Add enum values to GarbageCollectionReason

https://crrev.com/c/2429270 added kBackgroundAllocationFailure to
GarbageCollectionReason. Update the enum here as well and add other
missing values as well.

Bug: v8:10315
Change-Id: I572ae13bcb276457afec4625f992230ddf9a7577
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2440836Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#812794}

tools/metrics/histograms/enums.xml

@@ -32280,6 +32280,10 @@ Called by update_feature_policy_enum.py.-->
   <int value="19" label="kSamplingProfiler"/>
   <int value="20" label="kSnapshotCreator"/>
   <int value="21" label="kTesting"/>
+  <int value="22" label="kExternalFinalize"/>
+  <int value="23" label="kGlobalAllocationLimit"/>
+  <int value="24" label="kMeasureMemory"/>
+  <int value="25" label="kBackgroundAllocationFailure"/>
 </enum>
 
 <enum name="GATTCharacteristicHash">