Implement DisplayList GatherPixelRefs

cc/resources/display_list_recording_source.cc

Index: cc/resources/display_list_recording_source.cc
diff --git a/cc/resources/display_list_recording_source.cc b/cc/resources/display_list_recording_source.cc
index 367b23d73a11b5ab432e566dc837d2dda5c62910..208739d0c4a30c6f9e4f5ce2ad1c3bfc69b1b204 100644
--- a/cc/resources/display_list_recording_source.cc
+++ b/cc/resources/display_list_recording_source.cc
@@ -26,13 +26,15 @@ const int kOpCountThatIsOkToAnalyze = 10;
 
 namespace cc {
 
-DisplayListRecordingSource::DisplayListRecordingSource()
+DisplayListRecordingSource::DisplayListRecordingSource(
+    const gfx::Size& grid_cell_size)
     : slow_down_raster_scale_factor_for_debug_(0),
       requires_clear_(false),
       is_solid_color_(false),
       solid_color_(SK_ColorTRANSPARENT),
       background_color_(SK_ColorTRANSPARENT),
       pixel_record_distance_(kPixelDistanceToRecord),
+      grid_cell_size_(grid_cell_size),
       is_suitable_for_gpu_rasterization_(true) {
 }
 
@@ -114,6 +116,7 @@ bool DisplayListRecordingSource::UpdateAndExpandInvalidation(
   display_list_->EmitTraceSnapshot();
 
   display_list_->CreateAndCacheSkPicture();
+  display_list_->GatherPixelRefs(grid_cell_size_);

[ajuma, 2015/03/30 20:46:37]

This should be conditional on gather_pixel_refs_.

[weiliangc, 2015/03/31 14:04:11]

Done.

 
   return true;
 }