PrintSpooler crash if printer is reported to have only one color mode.

bug:11993304

Change-Id: I4932cf1b5b9b89f0cbf97011782ede037e7d814c
(cherry picked from commit b0d97b87ba5f23ee867f381a4e5916ebb2e5f762)
diff --git a/core/java/android/print/PrinterCapabilitiesInfo.java b/core/java/android/print/PrinterCapabilitiesInfo.java
index b615600..806a89d8 100644
--- a/core/java/android/print/PrinterCapabilitiesInfo.java
+++ b/core/java/android/print/PrinterCapabilitiesInfo.java
@@ -475,6 +475,12 @@
          * @param colorModes The color mode bit mask.
          * @param defaultColorMode The default color mode.
          * @return This builder.
+         * <p>
+         * <strong>Note:</strong> On platform version 19 (Kitkat) specifying
+         * only PrintAttributes#COLOR_MODE_MONOCHROME leads to a print spooler
+         * crash. Hence, you should declare either both color modes or
+         * PrintAttributes#COLOR_MODE_COLOR.
+         * </p>
          *
          * @throws IllegalArgumentException If color modes contains an invalid
          *         mode bit or if the default color mode is invalid.