Fix build for examples/vp8_multi_resolution_encoder.

Change-Id: I7ec4e0e05487fe80d93e31e0f6a21f326b5c7276
diff --git a/examples.mk b/examples.mk
index ce833fc..a47db04 100644
--- a/examples.mk
+++ b/examples.mk
@@ -179,7 +179,8 @@
 
 ifeq ($(CONFIG_MULTI_RES_ENCODING),yes)
 ifeq ($(CONFIG_LIBYUV),yes)
-EXAMPLES-$(CONFIG_VP8_DECODER)          += vp8_multi_resolution_encoder.c
+EXAMPLES-$(CONFIG_VP8_ENCODER)          += vp8_multi_resolution_encoder.c
+vp8_multi_resolution_encoder.SRCS       += tools_common.h tools_common.c
 vp8_multi_resolution_encoder.SRCS       += $(LIBYUV_SRCS)
 vp8_multi_resolution_encoder.GUID        = 04f8738e-63c8-423b-90fa-7c2703a374de
 vp8_multi_resolution_encoder.DESCRIPTION = VP8 Multiple-resolution Encoding
diff --git a/examples/vp8_multi_resolution_encoder.c b/examples/vp8_multi_resolution_encoder.c
index 1fef7db..d41e442 100644
--- a/examples/vp8_multi_resolution_encoder.c
+++ b/examples/vp8_multi_resolution_encoder.c
@@ -27,8 +27,9 @@
 #define interface (vpx_codec_vp8_cx())
 #define fourcc    0x30385056
 
-#define IVF_FILE_HDR_SZ  (32)
-#define IVF_FRAME_HDR_SZ (12)
+void usage_exit() {
+  exit(EXIT_FAILURE);
+}
 
 /*
  * The input video frame is downsampled several times to generate a multi-level
@@ -45,25 +46,6 @@
 #include "third_party/libyuv/include/libyuv/scale.h"
 #include "third_party/libyuv/include/libyuv/cpu_id.h"
 
-static void die(const char *fmt, ...) {
-    va_list ap;
-
-    va_start(ap, fmt);
-    vprintf(fmt, ap);
-    if(fmt[strlen(fmt)-1] != '\n')
-        printf("\n");
-    exit(EXIT_FAILURE);
-}
-
-static void die_codec(vpx_codec_ctx_t *ctx, const char *s) {
-    const char *detail = vpx_codec_error_detail(ctx);
-
-    printf("%s: %s\n", s, vpx_codec_error(ctx));
-    if(detail)
-        printf("    %s\n",detail);
-    exit(EXIT_FAILURE);
-}
-
 int (*read_frame_p)(FILE *f, vpx_image_t *img);
 
 static int read_frame(FILE *f, vpx_image_t *img) {