Add InstallInRoot property to snapshot binary json file.

Bug: 215295121
Test: Generated snapshot and verified InstallInRoot property is present.
Change-Id: I4f20a454477d1263e9c16e98468d659f89e1e4f1
diff --git a/cc/vendor_snapshot.go b/cc/vendor_snapshot.go
index 8a17e2e..e7c05ac 100644
--- a/cc/vendor_snapshot.go
+++ b/cc/vendor_snapshot.go
@@ -146,6 +146,7 @@
 	// binary flags
 	Symlinks         []string `json:",omitempty"`
 	StaticExecutable bool     `json:",omitempty"`
+	InstallInRoot    bool     `json:",omitempty"`
 
 	// dependencies
 	SharedLibs  []string `json:",omitempty"`
@@ -320,6 +321,7 @@
 			// binary flags
 			prop.Symlinks = m.Symlinks()
 			prop.StaticExecutable = m.StaticExecutable()
+			prop.InstallInRoot = m.InstallInRoot()
 			prop.SharedLibs = m.SnapshotSharedLibs()
 			// static libs dependencies are required to collect the NOTICE files.
 			prop.StaticLibs = m.SnapshotStaticLibs()