Implement new RPDQ copy logic for CALayer promotion.

cc/output/ca_layer_overlay.cc

Index: cc/output/ca_layer_overlay.cc
diff --git a/cc/output/ca_layer_overlay.cc b/cc/output/ca_layer_overlay.cc
index 094940502daf0ba2249ea3f3b0d640382112f894..802fd41dfb9a9e5e40342bb44d7cd4721047e81b 100644
--- a/cc/output/ca_layer_overlay.cc
+++ b/cc/output/ca_layer_overlay.cc
@@ -128,6 +128,9 @@ CALayerResult FromRenderPassQuad(ResourceProvider* resource_provider,
     }
   }
 
+  // The original RenderPassDrawQuad will be destroyed before the GLRenderer has
+  // a chance to do any copying. Save a new copy.
+  ca_layer_overlay->rpdq.reset(new RenderPassDrawQuad(*quad));
   ca_layer_overlay->render_pass_id = quad->render_pass_id;
   ca_layer_overlay->contents_rect = gfx::RectF(0, 0, 1, 1);
 
@@ -294,6 +297,16 @@ class CALayerOverlayProcessor {
 
 }  // namespace
 
+CALayerOverlaySharedState& CALayerOverlaySharedState::operator=(
+    const CALayerOverlaySharedState& other) {
+  sorting_context_id = other.sorting_context_id;
+  is_clipped = other.is_clipped;
+  clip_rect = other.clip_rect;
+  opacity = other.opacity;
+  transform = other.transform;
+  return *this;

[ccameron, 2016/08/04 01:46:01]

This can just be =default then, right?

[erikchen, 2016/08/05 17:15:06]

No longer necessary at all.

+}
+
 CALayerOverlay::CALayerOverlay() : filter(GL_LINEAR) {}
 
 CALayerOverlay::CALayerOverlay(const CALayerOverlay& other) = default;