[cc] Use base::TimeTicks in RenderStats

cc/content_layer_updater.cc

 // Copyright 2011 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 "cc/content_layer_updater.h"
 
 #include "base/debug/trace_event.h"
 #include "base/time.h"
 #include "cc/layer_painter.h"
 #include "cc/rendering_stats.h"
@@ skipping 33 matching lines @@
     SkPaint paint;
     paint.setAntiAlias(false);
     paint.setXfermodeMode(SkXfermode::kClear_Mode);
     SkRect layerSkRect = SkRect::MakeXYWH(layerRect.x(), layerRect.y(), layerRect.width(), layerRect.height());
     canvas->drawRect(layerSkRect, paint);
     canvas->clipRect(layerSkRect);
 
     gfx::RectF opaqueLayerRect;
     base::TimeTicks paintBeginTime = base::TimeTicks::Now();
     m_painter->paint(canvas, layerRect, opaqueLayerRect);
-    stats.totalPaintTimeInSeconds += (base::TimeTicks::Now() - paintBeginTime).InSecondsF();
+    stats.totalPaintTime += base::TimeTicks::Now() - paintBeginTime;
     canvas->restore();
 
     stats.totalPixelsPainted += contentRect.width() * contentRect.height();
 
     gfx::RectF opaqueContentRect = gfx::ScaleRect(opaqueLayerRect, contentsWidthScale, contentsHeightScale);
     resultingOpaqueRect = gfx::ToEnclosedRect(opaqueContentRect);
 
     m_contentRect = contentRect;
 }
 
 }  // namespace cc