Make Chips work on API 11+

By using the support library, and copying a few methods from TextView
into RecipientEditTextView, we can support chips back to API 11.

Bug: 8744878
Change-Id: I2d9bb43e71556504e929dcdccff9dae347020f28
diff --git a/chips/Android.mk b/chips/Android.mk
index 6aa8a01..ef4b8ab 100644
--- a/chips/Android.mk
+++ b/chips/Android.mk
@@ -16,6 +16,7 @@
 
 include $(CLEAR_VARS)
 LOCAL_MODULE := android-common-chips
+LOCAL_STATIC_JAVA_LIBRARIES += android-support-v4
 LOCAL_SDK_VERSION := 14
 LOCAL_SRC_FILES := \
      $(call all-java-files-under, src) \
@@ -26,4 +27,4 @@
 ##################################################
 # Build all sub-directories
 
-include $(call all-makefiles-under,$(LOCAL_PATH))
\ No newline at end of file
+include $(call all-makefiles-under,$(LOCAL_PATH))