* Remove stale references to DatabaseId
* Have Firestore take the DatabaseId directly
* Allow tests to default the database implicitly
* Have FSTSerializerBeta take DatabaseId by value
* Have FSTUserDataConverter take DatabaseId by value
* Make FIRFirestore.databaseID a const reference
* Make FSTFirestoreClient.databaseID a const reference
* Have FSTReferenceValue take DatabaseId by value
* Have DatabaseInfo take DatabaseId by value
* Have Serializer take DatabaseId by value
* Fix C++ ReferenceValue
* Take DatabaseId by value
* Reverse order to match Android
* Rename `reference` to `key`
use namespace aliases instead.
This makes the Objective-C code much more like what it's going to end up
being like when translated to C++: headers will include classes declared
in a namespace relative to firebase::firestore so everything else will
be named relative to firebase::firestore.
Meanwhile the using statements in the headers were causing us to miss
adding using statements in source files which was moving us away from
where we wanted to be.
Extract useful bits of FSTUserDataConverter for use in C++:
* Migrate FSTParsedSetData to core::ParsedSetData
* Migrate FSTParsedUpdateData to core::ParsedUpdateData
* Migrate FSTParseContext to core::ParseContext
* Split ParseAccumulator out of ParseContext to make ownership easier
Also:
* Remove dead code (handled in parseSentinelFieldValue)
* Flatten App/iOS/Supporting Files into the parent
* remove conversions in `Local` and `Remote`
* replace `FSTSnapshotVersion` in `Model`
* replace `FSTSnapshotVersion` in the rest
* let test check equal with C++ equal
* fix newly added code
* address changes
* port FieldMask to C++
* address changes
* address changes
* fix test
* address change
* Port transform operations (FSTTransformOperation, FSTServerTimestampTransform) to C++
* address changes
* address changes
* address changes
* implement `FieldTransform` in C++
* port `FieldTransform`
* make `fieldTransforms` shared inside `context`
* Implement Precondition in C++ w/o test yet
* add unit test for `Precondition`
* port `Precondition`
* address changes
* address changes
* fix bugs for integration test
* address changes
* fix lint
* address changes
* address changes
* implement Firestore DatabaseInfo in C++
* temporary stash changes; blocking on the massive renaming of .m to .mm
* add database_info_test to project
* finish port DatabaseId and fix style, modular fixing DatabaseInfo
* port DatabaseInfo
* remove FSTDatabase{ID,Info} and their tests from project
* fix unit test
* use namespace alias
* use namespace alias, leftover
* address more changes
* refactoring to use raw pointer instead of value for property
* address changes
* remove self->
* fix style
* remove the name suffix Alloc
* fix a bug
Gil