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

chrome/tools/test/reference_build/chrome_linux/resources/inspector/profile.js

Index: chrome/tools/test/reference_build/chrome_linux/resources/inspector/profile.js
diff --git a/chrome/tools/test/reference_build/chrome_linux/resources/inspector/profile.js b/chrome/tools/test/reference_build/chrome_linux/resources/inspector/profile.js
index 614c63557697b5a73858d38d0af8026e4e7b78ea..db4b542ff231af1390a8a253d59eb68645b31bcd 100644
--- a/chrome/tools/test/reference_build/chrome_linux/resources/inspector/profile.js
+++ b/chrome/tools/test/reference_build/chrome_linux/resources/inspector/profile.js
@@ -86,7 +86,23 @@ devtools.profiler.Profile.prototype.handleUnknownCode = function(
 
 
 /**
- * Registers static (library) code entry.
+ * Registers a library.
+ *
+ * @param {string} name Code entry name.
+ * @param {number} startAddr Starting address.
+ * @param {number} endAddr Ending address.
+ */
+devtools.profiler.Profile.prototype.addLibrary = function(
+    name, startAddr, endAddr) {
+  var entry = new devtools.profiler.CodeMap.CodeEntry(
+      endAddr - startAddr, name);
+  this.codeMap_.addLibrary(startAddr, entry);
+  return entry;
+};
+
+
+/**
+ * Registers statically compiled code entry.
  *
  * @param {string} name Code entry name.
  * @param {number} startAddr Starting address.