Merge remote-tracking branch 'aosp/upstream-master'

Change descriptions:
========================================================================
Integration test for embedding search
========================================================================
Support embedding search in the advanced scoring language
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Support embedding search in the advanced query language
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Add missing header inclusions.
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Assign default values to MemoryMappedFile members to avoid temporary object error during std::move
========================================================================
Use GetEmbeddingVector in EmbeddingIndex::TransferIndex
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Refactor SectionRestrictData
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Add EmbeddingIndex to IcingSearchEngine and create EmbeddingIndexingHandler
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Support optimize for embedding index
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Implement embedding search index
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Branch posting list accessor and serializer to store embedding hits
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Introduce embedding hit
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Update schema and document definition
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Add tests verifying that Icing will correctly save updated schema description fields.
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Allow adding duplicate hits with the same value into the posting list.
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Support an extension to the encoded Hit in Icing's posting list.
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Adds description fields to SchemaTypeConfigProto and PropertyConfigProto
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Support polymorphism in type property filters
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Fix posting list GetMinPostingListSizeToFit size calculation bug
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Add instructions to error message for advanced query backward compat.
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[Trunk Stable Flags and Files Rebuild #1] Implement v2 version file in version-util
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[Trunk Stable Flags and Files Rebuild #2] Integrate v2 version file with IcingSearchEngine
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Remove dead code in index initialization for HasPropertyOperator after introducing v2 version file
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[Icing version 4] Bump Icing kVersion to 4 for Android V
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[Icing][Expand QueryStats][4/x] Add lite index hit buffer info into QueryStats
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[Icing][Expand QueryStats][5/x] Add query processor advanced query
components latencies into QueryStats::SearchStats
========================================================================
Add instructions to error message for AppSearch advanced query features backward compatibility
========================================================================




BUG: 326987971
BUG: 326656531
BUG: 329747255
BUG: 294274922
BUG: 321107391
BUG: 324908653
BUG: 326987971
Bug: 314816301
Bug: 309826655
Bug: 305098009
Bug: 329747255
Test: unit test
Change-Id: I6f35b52114181d9dfded41cfb3949f062876a2e2

1 files changed, 1 insertions, 1 deletions

diff --git a/METADATA b/METADATA
index d350608..f6ad8fa 100644
--- a/METADATA
+++ b/METADATA
@@ -12,6 +12,6 @@ third_party {
     type: PIPER
     value: "http://google3/third_party/icing/"
   }
-  last_upgrade_date { year: 2019 month: 12 day: 20 }
+  last_upgrade_date { year: 2024 month: 3 day: 18 }
   license_type: NOTICE
 }