Speed up check_licenses by another 30% by scanning less files.

This improves run time from ~3 minutes to ~2 minutes for me locally.

BUG=28291

Review URL: http://codereview.chromium.org/7974012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@102363 0039d316-1c4b-4281-b951-d872f2087c98

third_party/devscripts/chromium-1.patch

 --- licensecheck.pl.orig	2011-09-22 10:51:25.934402455 -0700
 +++ licensecheck.pl	2011-09-22 10:45:54.585545044 -0700
+@@ -241,6 +241,12 @@ my @files = ();
+ my @find_args = ();
+ my $files_count = @ARGV;
+ 
++push @find_args, qw(-not ( -path */LayoutTests/* -prune ) );
++push @find_args, qw(-not ( -path */out/Debug/* -prune ) );
++push @find_args, qw(-not ( -path */out/Release/* -prune ) );
++push @find_args, qw(-not ( -path *.git* -prune ) );
++push @find_args, qw(-not ( -path *.svn* -prune ) );
++
+ push @find_args, qw(-maxdepth 1) unless $opt_recursive;
+ push @find_args, qw(-follow -type f -print);
+ 
 @@ -277,10 +277,6 @@
      while (<F>) {
          last if ($. > $opt_lines);

third_party/devscripts/licensecheck.pl

@@ -241,6 +241,12 @@ my @files = ();
 my @find_args = ();
 my $files_count = @ARGV;
 
+push @find_args, qw(-not ( -path */LayoutTests/* -prune ) );
+push @find_args, qw(-not ( -path */out/Debug/* -prune ) );
+push @find_args, qw(-not ( -path */out/Release/* -prune ) );
+push @find_args, qw(-not ( -path *.git* -prune ) );
+push @find_args, qw(-not ( -path *.svn* -prune ) );
+
 push @find_args, qw(-maxdepth 1) unless $opt_recursive;
 push @find_args, qw(-follow -type f -print);