mix-blend-mode implementation for accelerated layers

cc/layers/compositing_reasons.h

Index: cc/layers/compositing_reasons.h
diff --git a/cc/layers/compositing_reasons.h b/cc/layers/compositing_reasons.h
index 02354a03283c0ad690636e7029b17eca9a65a22e..0e9afc92513841ecf0a9412a149e04407ced168c 100644
--- a/cc/layers/compositing_reasons.h
+++ b/cc/layers/compositing_reasons.h
@@ -53,6 +53,8 @@ const uint64 kCompositingReasonLayerForBackground = GG_UINT64_C(1) << 30;
 const uint64 kCompositingReasonLayerForMask = GG_UINT64_C(1) << 31;
 const uint64 kCompositingReasonOverflowScrollingParent = GG_UINT64_C(1) << 32;
 const uint64 kCompositingReasonOutOfFlowClipping = GG_UINT64_C(1) << 33;
+const uint64 kCompositingReasonIsolateCompositedDescendants = GG_UINT64_C(1)

[danakj, 2013/11/13 21:02:03]

nit: this line wrapping differs from the rest of this file, was this via
clang-format? if not, can you match the others?

[rosca, 2013/11/14 21:56:34]

Yes, it's clang-format suggesting this, but I think we should keep them
consistent.
Done.

+                                                              << 35;
 
 typedef uint64 CompositingReasons;