On Linux, move the passing of filedescriptors to a dedicated socketpair().

chrome/tools/test/reference_build/chrome_linux/resources/inspector/debugger.css

Index: chrome/tools/test/reference_build/chrome_linux/resources/inspector/debugger.css
diff --git a/chrome/tools/test/reference_build/chrome_linux/resources/inspector/debugger.css b/chrome/tools/test/reference_build/chrome_linux/resources/inspector/debugger.css
deleted file mode 100644
index ed9df2f520b87ffc9a5d8c980bab4c2c68838253..0000000000000000000000000000000000000000
--- a/chrome/tools/test/reference_build/chrome_linux/resources/inspector/debugger.css
+++ /dev/null
@@ -1,35 +0,0 @@
-/** 
- * Style for javascript debugger.  See debugger.html.
- */
-
-html,body {
-  margin: 0px;
-  padding: 0px;
-  height: 100%;
-}
-#output {
-  font-family: monospace;
-  background-color: #ffffff;
-  min-height: 100%;
-}
-#outer {
-  height: 100%;
-  width: 100%;
-  white-space: pre-wrap;
-  padding: 0px 0px 24px 0px;
-}
-#command-line {
-  bottom: 0px;
-  /* not quite sure why this 5px is necessary */
-  right: 5px;
-  left: 0px;
-  position: fixed;
-  padding: 0px;
-  margin: 0px;
-}
-#command-line-text {
-  height: 20px;
-  display: block;
-  width: 100%;
-  font-family: monospace;
-}