WebKitTools/Scripts/update-webkit-chromium

#!/usr/bin/perl -w

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# Update script for the WebKit Chromium Port.

# Check if gclient is installed.
if (not `gclient --version`) {
    print STDERR "gclient is required for updating chromium dependencies.\n";
    print STDERR "Install depot_tools and add gclient to the environment\n";
    print STDERR "path. For more information, refer to:\n";
    print STDERR "http://dev.chromium.org/developers/how-tos/install-gclient\n";
    die;
}

chdir("WebKit/chromium") or die $!;
if (! -e ".gclient") {
    # If .gclient configuration file doesn't exist, create it.
    print "Configuring gclient...\n";
    system("gclient", 
           "config", 
           "--spec=solutions=[{'name':'./','url':None}]") == 0 or die $!;
}

# Execute gclient sync.
print "Updating chromium port dependencies using gclient...\n";
system("gclient", "sync", "--force") == 0 or die $!;