perl-5.14 deprecated the Switch module. We can use the given/when statement instead,
available since 5.10. Submitted upstream:

http://code.google.com/p/chromium/issues/detail?id=86645

--- third_party/WebKit/Source/WebKit/scripts/generate-webkitversion.pl.orig	2011-06-18 11:13:44.104816166 +0200
+++ third_party/WebKit/Source/WebKit/scripts/generate-webkitversion.pl	2011-06-18 11:14:10.238814221 +0200
@@ -39,7 +39,6 @@ use strict;
 use Config;
 use Getopt::Long;
 use File::Path;
-use Switch;
 
 my $usage = "generate-webkitversion --config WebKit/mac/Configurations/Version.xcconfig --outputDir <outputdir>";
 
--- chrome/tools/test/generate_mime_tests.pl.orig	2011-06-14 10:01:52.000000000 +0200
+++ chrome/tools/test/generate_mime_tests.pl	2011-06-18 11:48:40.093660143 +0200
@@ -32,7 +32,7 @@
 # the layout test framework.
 
 use strict;
-use Switch;  # used for switch-case program structure
+use feature qw(switch);
 
 my $arg_count = $#ARGV + 1;
 
@@ -161,15 +161,15 @@ my @expected = (
 #   Output : returns the associated description
 sub get_result_description
 {
-  switch ($_[0]) {
-    case "void"  { return "NOTHING";}
-    case "image" { return "an IMAGE";}
-    case "text"  { return "simple TEXT";}
-    case "html"  { return "an HTML as text";}
-    case "flash" { return "a FLASH object"}
-    case "rs"    { return "been RENDERED CORRECTLY";}
-    case "rf"    { return "been RENDERED INCORRECTLY";}
-    else         { return "UNKNOWN";}
+  given ($_[0]) {
+    when ('void')  { return "NOTHING";}
+    when ('image') { return "an IMAGE";}
+    when ('text')  { return "simple TEXT";}
+    when ('html')  { return "an HTML as text";}
+    when ('flash') { return "a FLASH object"}
+    when ('rs')    { return "been RENDERED CORRECTLY";}
+    when ('rf')    { return "been RENDERED INCORRECTLY";}
+    default         { return "UNKNOWN";}
   }
 }
 
@@ -180,22 +180,22 @@ sub get_result_description
 #   Output : returns the associated description
 sub get_query_description
 {
-  switch ($_[0]) {     
-    case "tag=img&content=type_gif.gif" { return "HTML page with a GIF image";}
-    case "tag=img&content=type_bmp.bmp" { return "HTML page with a BMP image";}
-    case "tag=img&content=type_tif.tif" { return "HTML page with a TIF image";}
-    case "tag=img&content=type_png.png" { return "HTML page with a PNG image";}
-    case "tag=img&content=type_jpg.jpg" { return "HTML page with a JPEG image"}
-    case "tag=img&content=type_txt.txt" { return "HTML page";}
-    case "tag=embed&content=type_swf.swf" { return "an HTML page with a FLASH object";}
-    case "switch=nohtml&content=type_gif.gif" { return "GIF image and no HTML";}
-    case "switch=nohtml&content=type_bmp.bmp" { return "BMP image and no HTML";}
-    case "switch=nohtml&content=type_tif.tif" { return "TIF image and no HTML";}
-    case "switch=nohtml&content=type_png.png" { return "PNG image and no HTML";}
-    case "switch=nohtml&content=type_jpg.jpg" { return "JPEG image and no HTML"}
-    case "switch=nohtml&content=type_txt.txt" { return "simple TEXT and no HTML";}
-    case "switch=nohtml&content=type_swf.swf" { return "FLASH object and no HTML";}
-    else { return "UNKNOWN TYPE";}
+  given ($_[0]) {     
+    when ('tag=img&content=type_gif.gif') { return "HTML page with a GIF image";}
+    when ('tag=img&content=type_bmp.bmp') { return "HTML page with a BMP image";}
+    when ('tag=img&content=type_tif.tif') { return "HTML page with a TIF image";}
+    when ('tag=img&content=type_png.png') { return "HTML page with a PNG image";}
+    when ('tag=img&content=type_jpg.jpg') { return "HTML page with a JPEG image"}
+    when ('tag=img&content=type_txt.txt') { return "HTML page";}
+    when ('tag=embed&content=type_swf.swf') { return "an HTML page with a FLASH object";}
+    when ('switch=nohtml&content=type_gif.gif') { return "GIF image and no HTML";}
+    when ('switch=nohtml&content=type_bmp.bmp') { return "BMP image and no HTML";}
+    when ('switch=nohtml&content=type_tif.tif') { return "TIF image and no HTML";}
+    when ('switch=nohtml&content=type_png.png') { return "PNG image and no HTML";}
+    when ('switch=nohtml&content=type_jpg.jpg') { return "JPEG image and no HTML"}
+    when ('switch=nohtml&content=type_txt.txt') { return "simple TEXT and no HTML";}
+    when ('switch=nohtml&content=type_swf.swf') { return "FLASH object and no HTML";}
+    default { return "UNKNOWN TYPE";}
   }
 }
 
--- third_party/WebKit/Source/WebCore/make-hash-tools.pl.orig	2011-06-14 10:04:55.000000000 +0200
+++ third_party/WebKit/Source/WebCore/make-hash-tools.pl	2011-06-18 11:49:02.502658474 +0200
@@ -20,7 +20,7 @@
 #   Boston, MA 02110-1301, USA.
 
 use strict;
-use Switch;
+use feature qw(switch);
 use File::Basename;
 
 my $outdir = $ARGV[0];
@@ -28,9 +28,9 @@ shift;
 my $option = basename($ARGV[0],".gperf");
 
 
-switch ($option) {
+given ($option) {
 
-case "DocTypeStrings" {
+when ('DocTypeStrings') {
 
     my $docTypeStringsGenerated    = "$outdir/DocTypeStrings.cpp";
     my $docTypeStringsGperf        = $ARGV[0];
@@ -38,9 +38,9 @@ case "DocTypeStrings" {
 
     system("gperf --key-positions=\"*\" -s 2 $docTypeStringsGperf > $docTypeStringsGenerated") == 0 || die "calling gperf failed: $?";
 
-} # case "DocTypeStrings"
+} # when "DocTypeStrings"
 
-case "ColorData" {
+when ('ColorData') {
 
     my $colorDataGenerated         = "$outdir/ColorData.cpp";
     my $colorDataGperf             = $ARGV[0];
@@ -48,6 +48,6 @@ case "ColorData" {
 
     system("gperf --key-positions=\"*\" -D -s 2 $colorDataGperf > $colorDataGenerated") == 0 || die "calling gperf failed: $?";
 
-} # case "ColorData"
+} # when "ColorData"
 
-} # switch ($option)
+} # given ($option)