Add ART boot image profile to the ART APEX.

We will need the profile when we generate the primary boot image on
device.

Bug: 203492478
Test: Run `banchan com.android.art x86_64 && m` and see
  `$ANDROID_PRODUCT_OUT/apex/com.android.art/etc/boot-image.prof`.
Test: Run `lunch aosp_cf_x86_64_phone-userdebug && m` and see both
  `$ANDROID_PRODUCT_OUT/apex/com.android.art/etc/boot-image.prof` and
  `$ANDROID_PRODUCT_OUT/system/etc/boot-image.prof`, in different
  sizes.
Test: Start Cuttlefish with the built image and see both
  `/apex/com.android.art/etc/boot-image.prof` and
  `/system/etc/boot-image.prof` on device.
Change-Id: Id879dc49b234133dfbb9563814328661a1f4a6c0

java/dexpreopt_bootjars.go

@@ -256,6 +256,10 @@ type bootImageConfig struct {
 	// Subdirectory where the image files on device are installed.
 	installDirOnDevice string
 
+	// Install path of the boot image profile if it needs to be installed in the APEX, or empty if not
+	// needed.
+	profileInstallPathInApex string
+
 	// A list of (location, jar) pairs for the Java modules in this image.
 	modules android.ConfiguredJarList
 
@@ -272,6 +276,9 @@ type bootImageConfig struct {
 	// Rules which should be used in make to install the outputs.
 	profileInstalls android.RuleBuilderInstalls
 
+	// Path to the image profile file on host (or empty, if profile is not generated).
+	profilePathOnHost android.Path
+
 	// Target-dependent fields.
 	variants []*bootImageVariant
 }
@@ -769,11 +776,14 @@ func bootImageProfileRule(ctx android.ModuleContext, image *bootImageConfig) and
 		FlagForEachArg("--dex-location=", image.getAnyAndroidVariant().dexLocationsDeps).
 		FlagWithOutput("--reference-profile-file=", profile)
 
-	rule.Install(profile, "/system/etc/boot-image.prof")
+	if image == defaultBootImageConfig(ctx) {
+		rule.Install(profile, "/system/etc/boot-image.prof")
+		image.profileInstalls = append(image.profileInstalls, rule.Installs()...)
+	}
 
 	rule.Build("bootJarsProfile", "profile boot jars")
 
-	image.profileInstalls = append(image.profileInstalls, rule.Installs()...)
+	image.profilePathOnHost = profile
 
 	return profile
 }