9b4836aa07
In the shadow DOM v1 it is impossible to set styles for nested shadow-dom elements. To fix the problem, style was added directly to gr-diff element as a style module (gr-syntax-layer does it in the same way). It is impossible to fix this problem with ::slotted, because ::slotted can't select a descendant of a top-level distributed child. Bug: Issue 11323 Change-Id: I4fcab47a40255490cd922f921502a8532dbffcf8