Implements core logic for Pixel Canvas

cc/layers/recording_source.cc

Index: cc/layers/recording_source.cc
diff --git a/cc/layers/recording_source.cc b/cc/layers/recording_source.cc
index 06defb1130db807ebe3f9db25789fc1568459f5b..5b6f52f5b61d1a09440adc49d0b45d7a712d2885 100644
--- a/cc/layers/recording_source.cc
+++ b/cc/layers/recording_source.cc
@@ -34,7 +34,8 @@ RecordingSource::RecordingSource()
       is_solid_color_(false),
       clear_canvas_with_debug_color_(kDefaultClearCanvasSetting),
       solid_color_(SK_ColorTRANSPARENT),
-      background_color_(SK_ColorTRANSPARENT) {}
+      background_color_(SK_ColorTRANSPARENT),
+      recording_scale_factor_(1.f) {}
 
 RecordingSource::~RecordingSource() {}
 
@@ -132,6 +133,10 @@ const DisplayItemList* RecordingSource::GetDisplayItemList() {
   return display_list_.get();
 }
 
+void RecordingSource::SetRecordingScaleFactor(float recording_scale_factor) {
+  recording_scale_factor_ = recording_scale_factor;
+}
+
 scoped_refptr<RasterSource> RecordingSource::CreateRasterSource(
     bool can_use_lcd_text) const {
   return scoped_refptr<RasterSource>(