Use the correct bootjars when multiple prebuilt apexes exist

hiddenapi and dexpreopt require boot and system server jars from apexes.
When building with prebuilts, this comes via
java_import/java_sdk_library_import, which acts as a hook for
prebuilt_apex/apex_set. If we have multiple apexes in the tree, this
hook becomes 1:many. This CL prepares dex_bootjars to select the right
deapexerd .jar files when mutliple prebuilts exist.

Implementation details
- Update prebuilt module types (prebuilt_apex/apex_set) and source
  apexes to set a map of
  library name to dex jar path on host.
- dex_bootjars will access the path of the .dex jar on host via the
  provider. These then
  copied/installed to the right locations.

This CL does not drop the old mechanism to get the dex file (i.e. by
creating a dep on java_library). Once all mainline
modules have been flagged using apex_contributions, the old mechanism
will be dropped

Bug: 308790457
Test: git_master-art-host:art-gtest https://android-build.corp.google.com/builds/abtd/run/L21500030000926533
Test: git_main:art_standalone_dexpreopt_tests https://android-build.corp.google.com/builds/abtd/run/L99000030000891212
Test: Added a unit test that checks that the right .jar is selected
when multiple prebuilts exists

Change-Id: I6ef94135b9303a35135810930af4b641df13a583

java/bootclasspath_fragment.go

@@ -385,6 +385,10 @@ func (i BootclasspathFragmentApexContentInfo) DexBootJarPathForContentModule(mod
 	}
 }
 
+func (i BootclasspathFragmentApexContentInfo) DexBootJarPathMap() bootDexJarByModule {
+	return i.contentModuleDexJarPaths
+}
+
 func (i BootclasspathFragmentApexContentInfo) ProfilePathOnHost() android.Path {
 	return i.profilePathOnHost
 }
@@ -1034,10 +1038,6 @@ func (module *PrebuiltBootclasspathFragmentModule) produceHiddenAPIOutput(ctx an
 		return android.PathForModuleSrc(ctx, *src)
 	}
 
-	// Retrieve the dex files directly from the content modules. They in turn should retrieve the
-	// encoded dex jars from the prebuilt .apex files.
-	encodedBootDexJarsByModule := extractEncodedDexJarsFromModules(ctx, contents)
-
 	output := HiddenAPIOutput{
 		HiddenAPIFlagOutput: HiddenAPIFlagOutput{
 			AnnotationFlagsPath:   pathForSrc("hidden_api.annotation_flags", module.prebuiltProperties.Hidden_api.Annotation_flags),
@@ -1048,8 +1048,6 @@ func (module *PrebuiltBootclasspathFragmentModule) produceHiddenAPIOutput(ctx an
 			StubFlagsPath: pathForOptionalSrc(module.prebuiltProperties.Hidden_api.Stub_flags, nil),
 			AllFlagsPath:  pathForOptionalSrc(module.prebuiltProperties.Hidden_api.All_flags, nil),
 		},
-
-		EncodedBootDexFilesByModule: encodedBootDexJarsByModule,
 	}
 
 	// TODO: Temporarily fallback to stub_flags/all_flags properties until prebuilts have been updated.