Boost frame rate measurement histogram range by 2x

content/renderer/render_widget.cc

 // Copyright (c) 2012 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 "content/renderer/render_widget.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
@@ skipping 854 matching lines @@
     webwidget_->instrumentCancelFrame();
     return;
   }
 
   if (!last_do_deferred_update_time_.is_null()) {
     base::TimeDelta delay = frame_begin_ticks - last_do_deferred_update_time_;
     if (is_accelerated_compositing_active_) {
       UMA_HISTOGRAM_CUSTOM_TIMES("Renderer4.AccelDoDeferredUpdateDelay",
                                  delay,
                                  base::TimeDelta::FromMilliseconds(1),
-                                 base::TimeDelta::FromMilliseconds(60),
-                                 30);
+                                 base::TimeDelta::FromMilliseconds(120),
+                                 60);
     } else {
       UMA_HISTOGRAM_CUSTOM_TIMES("Renderer4.SoftwareDoDeferredUpdateDelay",
                                  delay,
                                  base::TimeDelta::FromMilliseconds(1),
-                                 base::TimeDelta::FromMilliseconds(60),
-                                 30);
+                                 base::TimeDelta::FromMilliseconds(120),
+                                 60);
     }
 
     // Calculate filtered time per frame:
     float frame_time_elapsed = static_cast<float>(delay.InSecondsF());
     filtered_time_per_frame_ =
         0.9f * filtered_time_per_frame_ + 0.1f * frame_time_elapsed;
   }
   last_do_deferred_update_time_ = frame_begin_ticks;
 
   // OK, save the pending update to a local since painting may cause more
@@ skipping 880 matching lines @@
   Send(new ViewHostMsg_BeginSmoothScroll(routing_id_, down, scroll_far));
 }
 
 bool RenderWidget::WillHandleMouseEvent(const WebKit::WebMouseEvent& event) {
   return false;
 }
 
 bool RenderWidget::WebWidgetHandlesCompositorScheduling() const {
   return false;
 }