| Index: third_party/WebKit/Source/core/layout/compositing/CompositingRequirementsUpdater.cpp
|
| diff --git a/third_party/WebKit/Source/core/layout/compositing/CompositingRequirementsUpdater.cpp b/third_party/WebKit/Source/core/layout/compositing/CompositingRequirementsUpdater.cpp
|
| index 30520dedadfc56e718a1b6313c22f9b4132c6e5c..3cfa7d86c17c4625bf3723b2b30b156bef3d3112 100644
|
| --- a/third_party/WebKit/Source/core/layout/compositing/CompositingRequirementsUpdater.cpp
|
| +++ b/third_party/WebKit/Source/core/layout/compositing/CompositingRequirementsUpdater.cpp
|
| @@ -194,8 +194,11 @@ static CompositingReasons SubtreeReasonsForCompositing(
|
| // We ignore LCD text here because we are required to composite
|
| // scroll-dependant fixed position elements with composited descendants for
|
| // correctness - even if we lose LCD.
|
| + //
|
| + // TODO(smcgruer): Only composite fixed if needed (http://crbug.com/742213)
|
| const bool ignore_lcd_text = true;
|
| - if (compositing_reason_finder.RequiresCompositingForScrollDependentPosition(
|
| + if (layer->GetLayoutObject().Style()->GetPosition() == EPosition::kFixed ||
|
| + compositing_reason_finder.RequiresCompositingForScrollDependentPosition(
|
| layer, ignore_lcd_text)) {
|
| subtree_reasons |=
|
| kCompositingReasonPositionFixedOrStickyWithCompositedDescendants;
|
|
|