mac: Make build_app_dmg more silent.

chrome/tools/build/mac/build_app_dmg

Index: chrome/tools/build/mac/build_app_dmg
diff --git a/chrome/tools/build/mac/build_app_dmg b/chrome/tools/build/mac/build_app_dmg
index d88cc0bc6560ec6f285b433bf703ea215907f5e8..f6bb15dd22dafcfc6853f9116f8ff533e06c6f1a 100755
--- a/chrome/tools/build/mac/build_app_dmg
+++ b/chrome/tools/build/mac/build_app_dmg
@@ -24,20 +24,18 @@ BRAND_SCRIPT="${TOP}/build/branding_value.sh"
 
 BUILD_BRANDING=$1
 
-# show things as we run them
-set -x
-
 APP_NAME=$("${BRAND_SCRIPT}" "${BUILD_BRANDING}" PRODUCT_FULLNAME)
 DMG_NAME=$(echo "${APP_NAME}" | sed "s/ //g")
 
 SRC_APP_PATH="${BUILT_PRODUCTS_DIR}/${APP_NAME}.app"
 VOL_NAME="${APP_NAME}"
-DST_DMG_PATH="${BUILT_PRODUCTS_DIR}/${DMG_NAME}"
+DST_DMG_PATH="${BUILT_PRODUCTS_DIR}/${DMG_NAME}.dmg"
 
 # Call the real working
 "${PKG_DMG}" --source /var/empty \
              --target "${DST_DMG_PATH}" \
              --format UDBZ \
+             --verbosity 0 \
              --volname "${VOL_NAME}" \
              --tempdir "${TEMP_DIR}" \
              --copy "${SRC_APP_PATH}/:/${APP_NAME}.app/"