DevTools: [CSS] Add CSS.editRangeInStyleSheetText() to the protocol

LayoutTests/inspector-protocol/css/css-edit-range-expected.txt

Index: LayoutTests/inspector-protocol/css/css-edit-range-expected.txt
diff --git a/LayoutTests/inspector-protocol/css/css-edit-range-expected.txt b/LayoutTests/inspector-protocol/css/css-edit-range-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a67428acc4138b45cb63d76b83c387086c6658cc
--- /dev/null
+++ b/LayoutTests/inspector-protocol/css/css-edit-range-expected.txt
@@ -0,0 +1,70 @@
+==== Initial style sheet text ====
+
+div {
+    color: red;
+}
+
+
+
+Running test: testInsertText
+==== Style sheet text ====
+* { border: 1px }
+div {
+    color: red;
+}
+
+
+
+Running test: testMultiLineEdit
+==== Style sheet text ====
+* { border: 1px }
+div {
+    background-color: blue;
+    font-size: 12px;
+}
+
+
+
+Running test: testReplaceText
+==== Style sheet text ====
+* { border: 1px }
+p, span:hover {
+    background-color: blue;
+    font-size: 12px;
+}
+
+
+
+Running test: testInsertInTheEnd
+==== Style sheet text ====
+* { border: 1px }
+p, span:hover {
+    background-color: blue;
+    font-size: 12px;
+}
+* { box-sizing: border-box; }
+
+
+
+Running test: testRemoveText
+==== Style sheet text ====
+* { border: 1px }
+p, span:hover {
+    background-color: blue;
+}
+* { box-sizing: border-box; }
+
+
+
+Running test: testInvalidParameters
+Expected protocol error: range.startLine must be an integer value
+
+Running test: testNegativeRangeParameters
+Expected protocol error: Range parameters must be non-negative integer values
+
+Running test: testOutOfBoundsRangeParametersNoCrash
+Expected protocol error: Specified range is out of bounds
+
+Running test: testReversedRange
+Expected protocol error: Range start must preceed its end
+