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diff --git a/chrome/views/repeat_controller.cc b/chrome/views/repeat_controller.cc
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+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "chrome/views/repeat_controller.h"
+
+namespace ChromeViews {
+
+// The delay before the first and then subsequent repeats. Values taken from
+// XUL code: http://mxr.mozilla.org/seamonkey/source/layout/xul/base/src/nsRepeatService.cpp#52
+static const int kInitialRepeatDelay = 250;
+static const int kRepeatDelay = 50;
+
+///////////////////////////////////////////////////////////////////////////////
+// RepeatController, public:
+
+RepeatController::RepeatController(RepeatCallback* callback)
+    : timer_(NULL),
+      callback_(callback) {
+}
+
+RepeatController::~RepeatController() {
+  DestroyTimer();
+}
+
+void RepeatController::Start() {
+  DCHECK(!timer_);
+  // The first timer is slightly longer than subsequent repeats.
+  timer_ = MessageLoop::current()->timer_manager()->StartTimer(
+      kInitialRepeatDelay, this, false);
+}
+
+void RepeatController::Stop() {
+  DestroyTimer();
+}
+
+void RepeatController::Run() {
+  DestroyTimer();
+
+  // TODO(beng): (Cleanup) change this to just Run() when base rolls forward.
+  callback_->RunWithParams(Tuple0());
+  timer_ = MessageLoop::current()->timer_manager()->StartTimer(
+      kRepeatDelay, this, true);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// RepeatController, private:
+
+void RepeatController::DestroyTimer() {
+  if (!timer_)
+    return;
+
+  MessageLoop::current()->timer_manager()->StopTimer(timer_);
+  delete timer_;
+  timer_ = NULL;
+}
+
+}