Revert 37407 - DevTools: speed up a function in cpu profiles processor.

By using a single regex instead of three called one by one,
the function now works about 50% times faster.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/554117

TBR=mnaganov@chromium.org, victorw@chromium.org
Review URL: http://codereview.chromium.org/548183

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@37413 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 18 insertions, 7 deletions

diff --git a/webkit/glue/devtools/js/profiler_processor.js b/webkit/glue/devtools/js/profiler_processor.js
index 48893e6..b655229 100644
--- a/webkit/glue/devtools/js/profiler_processor.js
+++ b/webkit/glue/devtools/js/profiler_processor.js
@@ -110,21 +110,32 @@ goog.inherits(devtools.profiler.JsProfile, devtools.profiler.Profile);
 
 
 /**
- * RegExp that leaves only non-native JS functions.
+ * RegExp that leaves only JS functions.
  * @type {RegExp}
  */
-devtools.profiler.JsProfile.JS_NON_NATIVE_RE = new RegExp(
-    '^' +
-      '(?:Callback:)|' +
-      '(?:Script: (?!native))|' +
-      '(?:(?:LazyCompile|Function): [^ ]*(?: (?!native ).*\\.js:\\d+)?$)');
+devtools.profiler.JsProfile.JS_FUNC_RE = /^(LazyCompile|Function|Script|Callback):/;
+
+/**
+ * RegExp that filters out native code (ending with "native src.js:xxx").
+ * @type {RegExp}
+ */
+devtools.profiler.JsProfile.JS_NATIVE_FUNC_RE = /\ native\ \w+\.js:\d+$/;
+
+/**
+ * RegExp that filters out native scripts.
+ * @type {RegExp}
+ */
+devtools.profiler.JsProfile.JS_NATIVE_SCRIPT_RE = /^Script:\ native/;
 
 
 /**
  * @override
  */
 devtools.profiler.JsProfile.prototype.skipThisFunction = function(name) {
-  return !devtools.profiler.JsProfile.JS_NON_NATIVE_RE.test(name);
+  return !devtools.profiler.JsProfile.JS_FUNC_RE.test(name) ||
+      // To profile V8's natives comment out two lines below and '||' above.
+      devtools.profiler.JsProfile.JS_NATIVE_FUNC_RE.test(name) ||
+      devtools.profiler.JsProfile.JS_NATIVE_SCRIPT_RE.test(name);
 };