Preserving inline style of the replaced block element for FormatBlock('execCommand').

LayoutTests/editing/execCommand/format-block-with-block-expected.txt

Index: LayoutTests/editing/execCommand/format-block-with-block-expected.txt
diff --git a/LayoutTests/editing/execCommand/format-block-with-block-expected.txt b/LayoutTests/editing/execCommand/format-block-with-block-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..fa2537ca2b2d04feb958fa2c757def3c443c420c
--- /dev/null
+++ b/LayoutTests/editing/execCommand/format-block-with-block-expected.txt
@@ -0,0 +1,56 @@
+This test verifies that formatBlock adds the containing block element's inline style to the block-style element that replaces it.
+
+Before FormatBlock:
+| "
+"
+| <div>
+|   style="color: green"
+|   "<#selection-anchor>hello<#selection-focus>"
+| "
+"
+
+After FormatBlock:
+| "
+"
+| <h1>
+|   style="color: green"
+|   "<#selection-anchor>hello<#selection-focus>"
+| "
+"
+
+Before FormatBlock:
+| "
+"
+| <div>
+|   style="color: green"
+|   <#selection-caret>
+|   <br>
+| "
+"
+
+After FormatBlock:
+| "
+"
+| <h1>
+|   style="color: green"
+|   <#selection-caret>
+|   <br>
+| "
+"
+
+Before FormatBlock:
+| "
+"
+| <span>
+|   style="color: green"
+|   "<#selection-anchor>hello<#selection-focus>"
+| "
+"
+
+After FormatBlock:
+| "
+"
+| <h1>
+|   <span>
+|     style="color: green"
+|     "<#selection-anchor>hello<#selection-focus>"