Update droidstubs to use the SdkExt info file

metalava now accepts the --sdk-extensions-info flag. The argument is a
file containing metadata regarding extension SDKs; the SdkExtensions
module defines such a file. Update the droidstub targets to point to
this file.

Bug: 228828986
Test: m sdk dist
Change-Id: I3a5d92c640d9b22add416a20dbec3c8e352ba963
diff --git a/ApiDocs.bp b/ApiDocs.bp
index e6525c9..c87ecde 100644
--- a/ApiDocs.bp
+++ b/ApiDocs.bp
@@ -132,6 +132,7 @@
         "api-versions-jars-dir",
     ],
     api_levels_sdk_type: "system",
+    extensions_info_file: ":sdk-extensions-info",
 }
 
 droidstubs {
@@ -146,6 +147,7 @@
             "packages/modules/Media/apex/aidl/stable",
         ],
     },
+    extensions_info_file: ":sdk-extensions-info",
 }
 
 /////////////////////////////////////////////////////////////////////
diff --git a/StubLibraries.bp b/StubLibraries.bp
index 32101c7..bc2e6dd 100644
--- a/StubLibraries.bp
+++ b/StubLibraries.bp
@@ -420,6 +420,7 @@
         "sdk-dir",
         "api-versions-jars-dir",
     ],
+    extensions_info_file: ":sdk-extensions-info",
 }
 
 droidstubs {
@@ -432,6 +433,7 @@
         "api-versions-jars-dir",
     ],
     api_levels_sdk_type: "system",
+    extensions_info_file: ":sdk-extensions-info",
 }
 
 /////////////////////////////////////////////////////////////////////