Bug 854531, part 2 - Add update.sh script to mfbt/decimal/. r=Waldo

mfbt/decimal/update.sh

@@ -0,0 +1,61 @@
+# Usage: ./update.sh [blink-core-source-directory]
+#
+# Copies the needed files from a directory containing the original
+# Decimal.h and Decimal.cpp source that we need.
+# If [blink-core-source-directory] is not specified, this script will
+# attempt to download the latest versions using svn.
+
+# This was last updated with svn r148833
+
+set -e
+
+FILES=(
+  "LICENSE-APPLE"
+  "LICENSE-LGPL-2"
+  "LICENSE-LGPL-2.1"
+  "platform/Decimal.h"
+  "platform/Decimal.cpp"
+)
+
+OWN_NAME=`basename $0`
+
+if [ $# -gt 1 ]; then
+  echo "$OWN_NAME: Too many arguments">&2
+  exit 1
+fi
+
+if [ $# -eq 1 ]; then
+  BLINK_CORE_DIR="$1"
+  for F in "${FILES[@]}"
+  do
+    P="$BLINK_CORE_DIR/$F"
+    if [ ! -f "$P" ]; then
+      echo "$OWN_NAME: Couldn't find file: $P">&2
+      exit 1
+    fi
+  done
+  for F in "${FILES[@]}"
+  do
+    P="$BLINK_CORE_DIR/$F"
+    cp "$P" .
+  done
+else
+  SVN="svn --non-interactive --trust-server-cert"
+  REPO_PATH="https://src.chromium.org/blink/trunk/Source/core"
+  #REPO_PATH="https://svn.webkit.org/repository/webkit/trunk/Source/WebCore"
+
+  printf "Looking up latest Blink revision number..."
+  LATEST_REV=`$SVN info $REPO_PATH | grep '^Revision: ' | cut -c11-`
+  echo done.
+
+  for F in "${FILES[@]}"
+  do
+    printf "Exporting r$LATEST_REV of `basename $F`..."
+    $SVN export -r $LATEST_REV $REPO_PATH/$F 2>/dev/null 1>&2
+    echo done.
+  done
+fi
+
+# Apply patches:
+
+