Add interop API to prepare for RC open sourcing (#3582)

Example/DynamicLinks/Tests/FIRDLScionLoggingTest.m

@@ -95,6 +95,8 @@ static FakeAnalyticsLogEventWithOriginNameParametersHandler _handler;
 - (void)setConditionalUserProperty:(nonnull NSDictionary<NSString *, id> *)conditionalUserProperty {
 }
 
+- (void)getUserPropertiesWithCallback:(nonnull FIRAInteropUserPropertiesCallback)callback {
+}
 @end
 
 @interface FIRDLScionLoggingTest : XCTestCase

Example/Messaging/Tests/FIRMessagingAnalyticsTest.m

@@ -115,6 +115,8 @@ static FakeAnalyticsLogEventHandler _userPropertyHandler;
 - (void)setConditionalUserProperty:(nonnull NSDictionary<NSString *,id> *)conditionalUserProperty {
 }
 
+- (void)getUserPropertiesWithCallback:(nonnull FIRAInteropUserPropertiesCallback)callback {
+}
 @end
 
 @interface FIRMessagingAnalytics (ExposedForTest)

FirebaseABTesting/Tests/Unit/ABTFakeFIRAConditionalUserPropertyController.m

@@ -137,4 +137,6 @@
 - (void)unregisterAnalyticsListenerWithOrigin:(nonnull NSString *)origin {
 }
 
+- (void)getUserPropertiesWithCallback:(nonnull FIRAInteropUserPropertiesCallback)callback {
+}
 @end

FirebaseAnalyticsInterop.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = 'FirebaseAnalyticsInterop'
-  s.version          = '1.3.0'
+  s.version          = '1.4.0'
   s.summary          = 'Interfaces that allow other Firebase SDKs to use Analytics functionality.'
 
   s.description      = <<-DESC

InAppMessaging/Example/Tests/FIRIAMAnalyticsEventLoggerImplTests.m

@@ -130,6 +130,8 @@ typedef void (^FakeAnalyticsLastNotificationHandler)(NSString *origin, LastNotif
 - (void)setConditionalUserProperty:(nonnull NSDictionary<NSString *, id> *)conditionalUserProperty {
 }
 
+- (void)getUserPropertiesWithCallback:(nonnull FIRAInteropUserPropertiesCallback)callback {
+}
 @end
 
 @implementation FIRIAMAnalyticsEventLoggerImplTests

Interop/Analytics/Public/FIRAnalyticsInterop.h

@@ -20,6 +20,9 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+/// Block typedef callback parameter to getUserPropertiesWithCallback:.
+typedef void (^FIRAInteropUserPropertiesCallback)(NSDictionary<NSString *, id> *userProperties);
+
 /// Connector for bridging communication between Firebase SDKs and FirebaseAnalytics API.
 @protocol FIRAnalyticsInterop
 
@@ -40,6 +43,9 @@ NS_ASSUME_NONNULL_BEGIN
 /// Returns the maximum number of user properties.
 - (NSInteger)maxUserProperties:(NSString *)origin;
 
+/// Returns the user properties to a callback function.
+- (void)getUserPropertiesWithCallback:(FIRAInteropUserPropertiesCallback)callback;
+
 /// Logs events.
 - (void)logEventWithOrigin:(NSString *)origin
                       name:(NSString *)name