Add support for sanitizer property

Add a new feature to cc modules that adds the cflags and libraries
necessary to implement AddressSanitizer, ThreadSanitizer, and
UndefinedBehaviorSanitizer.

Change-Id: Ibe5ffadc7ece56080a2521f2c7c00da9ef712584
diff --git a/cc/arm_device.go b/cc/arm_device.go
index ea7db43..764aaa9 100644
--- a/cc/arm_device.go
+++ b/cc/arm_device.go
@@ -337,6 +337,10 @@
 	}
 }
 
+func (toolchainArm) AddressSanitizerRuntimeLibrary() string {
+	return "libclang_rt.asan-arm-android.so"
+}
+
 func armToolchainFactory(arch common.Arch) Toolchain {
 	var fixCortexA8 string
 	toolchainCflags := make([]string, 2, 3)