cc: Low quality support for low res tiles

cc/resources/picture.cc

 // Copyright 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 "cc/resources/picture.h"
 
 #include <algorithm>
 #include <limits>
 #include <set>
 
@@ skipping 62 matching lines @@
 
   // Try JPEG.
   scoped_ptr<SkBitmap> decoded_jpeg(gfx::JPEGCodec::Decode(data, size));
   if (decoded_jpeg) {
     *bm = *decoded_jpeg;
     return true;
   }
   return false;
 }
 
-class DisableLCDTextFilter : public SkDrawFilter {
- public:
-  // SkDrawFilter interface.
-  virtual bool filter(SkPaint* paint, SkDrawFilter::Type type) OVERRIDE {
-    if (type != SkDrawFilter::kText_Type)
-      return true;
-
-    paint->setLCDRenderText(false);
-    return true;
-  }
-};
-
 // URI label for a lazily decoded SkPixelRef.
 const char kLabelLazyDecoded[] = "lazy";
 
 void GatherPixelRefsForRect(
     SkPicture* picture,
     gfx::Rect rect,
     Picture::PixelRefs* pixel_refs) {
   DCHECK(picture);
   SkData* pixel_ref_data = SkPictureUtils::GatherPixelRefs(
       picture,
@@ skipping 239 matching lines @@
     SkCanvas* canvas,
     SkDrawPictureCallback* callback,
     gfx::Rect content_rect,
     float contents_scale,
     bool enable_lcd_text) {
   TRACE_EVENT_BEGIN1("cc", "Picture::Raster",
     "data", AsTraceableRasterData(content_rect, contents_scale));
 
   DCHECK(picture_);
 
-  skia::RefPtr<DisableLCDTextFilter> disable_lcd_text_filter;
-
   canvas->save();
   canvas->clipRect(gfx::RectToSkRect(content_rect));
   canvas->scale(contents_scale, contents_scale);
   canvas->translate(layer_rect_.x(), layer_rect_.y());
-  // Pictures by default have LCD text enabled.
-  if (!enable_lcd_text) {
-    disable_lcd_text_filter = skia::AdoptRef(new DisableLCDTextFilter);
-    canvas->setDrawFilter(disable_lcd_text_filter.get());
-  }
   picture_->draw(canvas, callback);
   SkIRect bounds;
   canvas->getClipDeviceBounds(&bounds);
   canvas->restore();
   TRACE_EVENT_END1("cc", "Picture::Raster",
                    "num_pixels_rasterized", bounds.width() * bounds.height());
 }
 
 scoped_ptr<Value> Picture::AsValue() const {
   SkDynamicMemoryWStream stream;
@@ skipping 120 matching lines @@
   raster_data->Set("picture_id", TracedValue::CreateIDRef(this).release());
   raster_data->SetDouble("scale", scale);
   raster_data->SetDouble("rect_x", rect.x());
   raster_data->SetDouble("rect_y", rect.y());
   raster_data->SetDouble("rect_width", rect.width());
   raster_data->SetDouble("rect_height", rect.height());
   return TracedValue::FromValue(raster_data.release());
 }
 
 }  // namespace cc