Update from https://crrev.com/317530

cc/layers/picture_layer.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/layers/picture_layer.h"
 
 #include "base/auto_reset.h"
 #include "cc/layers/content_layer_client.h"
 #include "cc/layers/picture_layer_impl.h"
 #include "cc/resources/display_list_recording_source.h"
 #include "cc/resources/picture_pile.h"
 #include "cc/trees/layer_tree_impl.h"
 #include "third_party/skia/include/core/SkPictureRecorder.h"
 #include "ui/gfx/geometry/rect_conversions.h"
 
 namespace cc {
 
 scoped_refptr<PictureLayer> PictureLayer::Create(ContentLayerClient* client) {
   return make_scoped_refptr(new PictureLayer(client));
 }
 
 PictureLayer::PictureLayer(ContentLayerClient* client)
     : client_(client),
       instrumentation_object_tracker_(id()),
       update_source_frame_number_(-1),
-      can_use_lcd_text_for_update_(true),
       is_mask_(false),
       nearest_neighbor_(false) {
 }
 
 PictureLayer::PictureLayer(ContentLayerClient* client,
                            scoped_ptr<RecordingSource> source)
     : PictureLayer(client) {
   recording_source_ = source.Pass();
 }
 
@@ skipping 25 matching lines @@
   if (update_source_frame_number_ != source_frame_number &&
       recording_source_bounds != impl_bounds) {
     // Update may not get called for the layer (if it's not in the viewport
     // for example, even though it has resized making the recording source no
     // longer valid. In this case just destroy the recording source.
     recording_source_->SetEmptyBounds();
   }
 
   layer_impl->SetNearestNeighbor(nearest_neighbor_);
 
+  // Preserve lcd text settings from the current raster source.
+  bool can_use_lcd_text = layer_impl->RasterSourceUsesLCDText();
   scoped_refptr<RasterSource> raster_source =
-      recording_source_->CreateRasterSource();
+      recording_source_->CreateRasterSource(can_use_lcd_text);
   layer_impl->UpdateRasterSource(raster_source, &recording_invalidation_,
                                  nullptr);
   DCHECK(recording_invalidation_.IsEmpty());
 }
 
 void PictureLayer::SetLayerTreeHost(LayerTreeHost* host) {
   Layer::SetLayerTreeHost(host);
   if (host) {
     if (!recording_source_) {
       if (host->settings().use_display_lists) {
@@ skipping 16 matching lines @@
         gfx::IntersectRects(layer_rect, gfx::Rect(bounds())));
   }
   Layer::SetNeedsDisplayRect(layer_rect);
 }
 
 bool PictureLayer::Update(ResourceUpdateQueue* queue,
                           const OcclusionTracker<Layer>* occlusion) {
   update_source_frame_number_ = layer_tree_host()->source_frame_number();
   bool updated = Layer::Update(queue, occlusion);
 
-  bool can_use_lcd_text_changed = UpdateCanUseLCDText();
-
   gfx::Rect visible_layer_rect = gfx::ScaleToEnclosingRect(
       visible_content_rect(), 1.f / contents_scale_x());
   gfx::Size layer_size = paint_properties().bounds;
 
   if (last_updated_visible_content_rect_ == visible_content_rect() &&
-      recording_source_->GetSize() == layer_size && !can_use_lcd_text_changed &&
+      recording_source_->GetSize() == layer_size &&
       pending_invalidation_.IsEmpty()) {
     // Only early out if the visible content rect of this layer hasn't changed.
     return updated;
   }
 
   recording_source_->SetBackgroundColor(SafeOpaqueBackgroundColor());
   recording_source_->SetRequiresClear(!contents_opaque() &&
                                       !client_->FillsBoundsCompletely());
 
   TRACE_EVENT1("cc", "PictureLayer::Update",
@@ skipping 12 matching lines @@
     // the full page content must always be provided in the picture layer.
     visible_layer_rect = gfx::Rect(layer_size);
   }
 
   // UpdateAndExpandInvalidation will give us an invalidation that covers
   // anything not explicitly recorded in this frame. We give this region
   // to the impl side so that it drops tiles that may not have a recording
   // for them.
   DCHECK(client_);
   updated |= recording_source_->UpdateAndExpandInvalidation(
-      client_, &recording_invalidation_, can_use_lcd_text_for_update_,
-      layer_size, visible_layer_rect, update_source_frame_number_,
-      RecordingSource::RECORD_NORMALLY);
+      client_, &recording_invalidation_, layer_size, visible_layer_rect,
+      update_source_frame_number_, RecordingSource::RECORD_NORMALLY);
   last_updated_visible_content_rect_ = visible_content_rect();
 
   if (updated) {
     SetNeedsPushProperties();
   } else {
     // If this invalidation did not affect the recording source, then it can be
     // cleared as an optimization.
     recording_invalidation_.Clear();
   }
 
   return updated;
 }
 
 void PictureLayer::SetIsMask(bool is_mask) {
   is_mask_ = is_mask;
 }
 
-bool PictureLayer::SupportsLCDText() const {
-  return true;
-}
-
-bool PictureLayer::UpdateCanUseLCDText() {
-  if (!can_use_lcd_text_for_update_)
-    return false;  // Don't allow the LCD text state to change once disabled.
-  if (can_use_lcd_text_for_update_ == can_use_lcd_text())
-    return false;
-
-  can_use_lcd_text_for_update_ = can_use_lcd_text();
-  return true;
-}
-
 skia::RefPtr<SkPicture> PictureLayer::GetPicture() const {
   // We could either flatten the RecordingSource into a single SkPicture,
   // or paint a fresh one depending on what we intend to do with the
   // picture. For now we just paint a fresh one to get consistent results.
   if (!DrawsContent())
     return skia::RefPtr<SkPicture>();
 
   int width = bounds().width();
   int height = bounds().height();
 
@@ skipping 24 matching lines @@
 
 bool PictureLayer::HasDrawableContent() const {
   return client_ && Layer::HasDrawableContent();
 }
 
 void PictureLayer::RunMicroBenchmark(MicroBenchmark* benchmark) {
   benchmark->RunOnLayer(this);
 }
 
 }  // namespace cc