cc: Create a cc::ScrollbarThemePainter and an adapter class in compositor bindings.

cc/content_layer.cc

 // Copyright 2010 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.h"
 
 #include "base/debug/trace_event.h"
 #include "base/metrics/histogram.h"
 #include "base/time.h"
 #include "cc/bitmap_content_layer_updater.h"
 #include "cc/bitmap_skpicture_content_layer_updater.h"
 #include "cc/content_layer_client.h"
 #include "cc/layer_painter.h"
 #include "cc/layer_tree_host.h"
 
 namespace cc {
 
 ContentLayerPainter::ContentLayerPainter(ContentLayerClient* client)
     : m_client(client)
 {
 }
 
 scoped_ptr<ContentLayerPainter> ContentLayerPainter::create(ContentLayerClient* client)
 {
     return make_scoped_ptr(new ContentLayerPainter(client));
 }
 
-void ContentLayerPainter::paint(SkCanvas* canvas, const gfx::Rect& contentRect, gfx::RectF& opaque)
+void ContentLayerPainter::paint(SkCanvas* canvas, gfx::Rect contentRect, gfx::RectF& opaque)
 {
     base::TimeTicks paintStart = base::TimeTicks::HighResNow();
     m_client->paintContents(canvas, contentRect, opaque);
     base::TimeTicks paintEnd = base::TimeTicks::HighResNow();
     double pixelsPerSec = (contentRect.width() * contentRect.height()) / (paintEnd - paintStart).InSecondsF();
     HISTOGRAM_CUSTOM_COUNTS("Renderer4.AccelContentPaintDurationMS", (paintEnd - paintStart).InMilliseconds(), 0, 120, 30);
     HISTOGRAM_CUSTOM_COUNTS("Renderer4.AccelContentPaintMegapixPerSecond", pixelsPerSec / 1000000, 10, 210, 30);
 }
 
 const int ContentLayer::kLCDTextMaxChangeCount = 1;
@@ skipping 99 matching lines @@
         // it does not really cause any invalidation.
         TRACE_EVENT_INSTANT0("cc", "ContentLayer::canUseLCDTextDidChange");
     }
     ++m_lcdTextChangeCount;
  
     // Need to repaint the layer with different text AA setting.
     setNeedsDisplay();
 }
 
 }  // namespace cc