DevTools: improve test infrastructure w/ devtools driving the test

third_party/WebKit/Source/devtools/front_end/main/Timer.js

Index: third_party/WebKit/Source/devtools/front_end/main/Timer.js
diff --git a/third_party/WebKit/Source/devtools/front_end/main/Timer.js b/third_party/WebKit/Source/devtools/front_end/main/Timer.js
new file mode 100644
index 0000000000000000000000000000000000000000..a8baec61b4dc622e745a9c5c2da9fba3528231dd
--- /dev/null
+++ b/third_party/WebKit/Source/devtools/front_end/main/Timer.js
@@ -0,0 +1,17 @@
+/**
+ * @param {string} label
+ */
+Main.time = function(label) {
+  if (Host.isUnderTest())
+    return;
+  console.time(label);
+};
+
+/**
+ * @param {string} label
+ */
+Main.timeEnd = function(label) {
+  if (Host.isUnderTest())
+    return;
+  console.timeEnd(label);
+};