[compositorworker] compositor proxy mutation updates underlying layers

third_party/WebKit/Source/core/dom/DOMMatrix.cpp

Index: third_party/WebKit/Source/core/dom/DOMMatrix.cpp
diff --git a/third_party/WebKit/Source/core/dom/DOMMatrix.cpp b/third_party/WebKit/Source/core/dom/DOMMatrix.cpp
index 802ab17963d148fd2aba4ff7ffa03004b5cd24b2..56a80f91bae013fd4798ca4cc3b7846d477d93a7 100644
--- a/third_party/WebKit/Source/core/dom/DOMMatrix.cpp
+++ b/third_party/WebKit/Source/core/dom/DOMMatrix.cpp
@@ -16,6 +16,12 @@ DOMMatrix* DOMMatrix::create(DOMMatrixReadOnly* other)
     return new DOMMatrix(other->matrix(), other->is2D());
 }
 
+DOMMatrix* DOMMatrix::create(const SkMatrix44& matrix)
+{
+    TransformationMatrix transformationMatrix(matrix);
+    return new DOMMatrix(transformationMatrix, true);

[jbroman, 2016/06/08 14:59:38]

the boolean here is "is2D"; what justification does this constructor have for
believing that the SkMatrix44 it is given is 2D?

[majidvp, 2016/06/08 21:50:09]

Done.
You are absolutely right. Not the bit is only set if the TransformationMatrix is
affine which is equivalent to a 2D DOMMatrix;

+}
+
 DOMMatrix::DOMMatrix(const TransformationMatrix& matrix, bool is2D)
 {
     m_matrix = TransformationMatrix::create(matrix);