3 files changed, 80 insertions, 29 deletions

diff --git a/webkit/extensions/v8/benchmarking_extension.cc b/webkit/extensions/v8/benchmarking_extension.cc
index 1a30968..31bb080 100644
--- a/webkit/extensions/v8/benchmarking_extension.cc
+++ b/webkit/extensions/v8/benchmarking_extension.cc
@@ -4,7 +4,6 @@
 
 #include "base/command_line.h"
 #include "base/stats_table.h"
-#include "base/time.h"
 #include "net/http/http_network_layer.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebCache.h"
 #include "webkit/extensions/v8/benchmarking_extension.h"
@@ -46,26 +45,6 @@ class BenchmarkingWrapper : public v8::Extension {
         "  native function IsSingleProcess();"
         "  return IsSingleProcess();"
         "};"
-        "chrome.Interval = function() {"
-        "  var start_ = 0;"
-        "  var stop_ = 0;"
-        "  native function HiResTime();"
-        "  this.start = function() {"
-        "    stop_ = 0;"
-        "    start_ = HiResTime();"
-        "  };"
-        "  this.stop = function() {"
-        "    stop_ = HiResTime();"
-        "    if (start_ == 0)"
-        "      stop_ = 0;"
-        "  };"
-        "  this.microseconds = function() {"
-        "    var stop = stop_;"
-        "    if (stop == 0 && start_ != 0)"
-        "      stop = HiResTime();"
-        "    return Math.ceil(stop - start_);"
-        "  };"
-        "}"
         ) {}
 
   virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
@@ -80,10 +59,7 @@ class BenchmarkingWrapper : public v8::Extension {
       return v8::FunctionTemplate::New(GetCounter);
     } else if (name->Equals(v8::String::New("IsSingleProcess"))) {
       return v8::FunctionTemplate::New(IsSingleProcess);
-    } else if (name->Equals(v8::String::New("HiResTime"))) {
-      return v8::FunctionTemplate::New(HiResTime);
     }
-
     return v8::Handle<v8::FunctionTemplate>();
   }
 
@@ -123,11 +99,6 @@ class BenchmarkingWrapper : public v8::Extension {
   static v8::Handle<v8::Value> IsSingleProcess(const v8::Arguments& args) {
     return v8::Boolean::New(webkit_glue::IsSingleProcess());
   }
-
-  static v8::Handle<v8::Value> HiResTime(const v8::Arguments& args) {
-    return v8::Number::New(
-        static_cast<double>(base::TimeTicks::HighResNow().ToInternalValue()));
-  }
 };
 
 v8::Extension* BenchmarkingExtension::Get() {
diff --git a/webkit/extensions/v8/interval_extension.cc b/webkit/extensions/v8/interval_extension.cc
new file mode 100644
index 0000000..95b69a5
--- /dev/null
+++ b/webkit/extensions/v8/interval_extension.cc
@@ -0,0 +1,58 @@
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "webkit/extensions/v8/interval_extension.h"
+#include "base/time.h"
+
+namespace extensions_v8 {
+
+const char* kIntervalExtensionName = "v8/Interval";
+
+class IntervalExtensionWrapper : public v8::Extension {
+ public:
+  IntervalExtensionWrapper()
+      : v8::Extension(
+            kIntervalExtensionName,
+            "var chromium;"
+            "if (!chromium)"
+            "  chromium = {};"
+            "chromium.Interval = function() {"
+            "  var start_ = 0;"
+            "  var stop_ = 0;"
+            "  native function HiResTime();"
+            "  this.start = function() {"
+            "    stop_ = 0;"
+            "    start_ = HiResTime();"
+            "  };"
+            "  this.stop = function() {"
+            "    stop_ = HiResTime();"
+            "    if (start_ == 0)"
+            "      stop_ = 0;"
+            "  };"
+            "  this.microseconds = function() {"
+            "    var stop = stop_;"
+            "    if (stop == 0 && start_ != 0)"
+            "      stop = HiResTime();"
+            "    return Math.ceil((stop - start_) * 1000000);"
+            "  };"
+            "}") {}
+
+    virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
+        v8::Handle<v8::String> name) {
+      if (name->Equals(v8::String::New("HiResTime"))) {
+        return v8::FunctionTemplate::New(HiResTime);
+      }
+      return v8::Handle<v8::FunctionTemplate>();
+    }
+
+    static v8::Handle<v8::Value> HiResTime(const v8::Arguments& args) {
+      return v8::Number::New(base::Time::Now().ToDoubleT());
+    }
+};
+
+v8::Extension*  IntervalExtension::Get() {
+  return new IntervalExtensionWrapper();
+}
+
+}  // namespace extensions_v8
diff --git a/webkit/extensions/v8/interval_extension.h b/webkit/extensions/v8/interval_extension.h
new file mode 100644
index 0000000..83e37bc
--- /dev/null
+++ b/webkit/extensions/v8/interval_extension.h
@@ -0,0 +1,22 @@
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// The IntervalExtension is a v8 extension to implement a simple interval
+// class for measuring microsecond intervals.
+
+#ifndef WEBKIT_EXTENSIONS_V8_INTERVAL_EXTENSION_H_
+#define WEBKIT_EXTENSIONS_V8_INTERVAL_EXTENSION_H_
+
+#include "v8/include/v8.h"
+
+namespace extensions_v8 {
+
+class IntervalExtension {
+ public:
+  static v8::Extension* Get();
+};
+
+}  // namespace extensions_v8
+
+#endif  // WEBKIT_EXTENSIONS_V8_INTERVAL_EXTENSION_H_