Restore behaviour of middle anonymous blocks inheriting style from inline parents

third_party/WebKit/Source/core/layout/LayoutInline.cpp

Index: third_party/WebKit/Source/core/layout/LayoutInline.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutInline.cpp b/third_party/WebKit/Source/core/layout/LayoutInline.cpp
index 0a4eda2dd57eb310ed1135c0862e548400dc8632..f33c3e2ec468f3682adb8ec08d0678d708cc1408 100644
--- a/third_party/WebKit/Source/core/layout/LayoutInline.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutInline.cpp
@@ -343,8 +343,18 @@ void LayoutInline::AddChildIgnoringContinuation(LayoutObject* new_child,
     // of this inline. We take all of the children after |beforeChild| and put
     // them in a clone of this object.
     RefPtr<ComputedStyle> new_style =
-        ComputedStyle::CreateAnonymousStyleWithDisplay(
-            ContainingBlock()->StyleRef(), EDisplay::kBlock);
+        ComputedStyle::CreateAnonymousStyleWithDisplay(StyleRef(),
+                                                       EDisplay::kBlock);
+    // The anon block we create here doesn't exist in the CSS spec, so
+    // we need to ensure that any blocks it contains inherit properly
+    // from its true parent. This means they must use the direction set by the
+    // anon block's containing block, so we need to prevent the anon block
+    // from inheriting direction from the inline. If there are any other
+    // inheritable properties that apply to block and inline elements
+    // but only affect the layout of children we will want to special-case
+    // them here too. Writing-mode would be one if it didn't create a
+    // formatting context of its own, removing the need for continuations.
+    new_style->SetDirection(ContainingBlock()->StyleRef().Direction());
 
     // If inside an inline affected by in-flow positioning the block needs to be
     // affected by it too. Giving the block a layer like this allows it to