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

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

+==== Initial style sheet text ====
+* {
+    box-sizing: border-box;
+}
+
+html, body, div, a {
+    /* resetting some properties */
+    padding: 0;
+    margin: 0;
+    border: 0;
+    display: flex; /* flex FTW! */
+}
+
+p:first-letter {
+    font-size: 200%;
+}
+
+.empty-rule {
+}
+
+
+Running test: testEditSelector
+=== updated RULE ===
+.EDITED-SELECTOR {
+    box-sizing: border-box
+}
+
+Running test: testEditSubSelector
+=== updated RULE ===
+html, .EDITED-SELECTOR, div, a {
+    padding: 0
+    margin: 0
+    border: 0
+    display: flex
+}
+
+Running test: testBreakingCommentEditSelector
+Expected protocol error: NotFoundError Editing in stylesheet scope should insert a single rule.
+
+Running test: testInsertInSelectorStart
+=== updated RULE ===
+head, html, body, div, a {
+    padding: 0
+    margin: 0
+    border: 0
+    display: flex
+}
+
+Running test: testValidEditPseudoClass
+=== updated RULE ===
+p:first-line {
+    font-size: 200%
+}
+
+Running test: testInvalidPseudoClass
+Expected protocol error: NotFoundError Editing in stylesheet scope should insert a single rule.
+
+Running test: testEditProperty
+=== updated STYLE ===
+padding: 0
+content: 'EDITED PROPERTY'
+border: 0
+display: flex
+
+Running test: testBreakingCommentEditProperty
+Expected protocol error: NotFoundError Rule property edit should not damage more then one property.
+
+Running test: testInsertFirstProperty
+=== updated STYLE ===
+content: 'INSERTED PROPERTY'
+padding: 0
+margin: 0
+border: 0
+display: flex
+
+Running test: testInsertLastProperty
+=== updated STYLE ===
+padding: 0
+margin: 0
+border: 0
+display: flex
+content: 'INSERTED PROPERTY'
+
+Running test: testInsertMultipleProperties
+=== updated STYLE ===
+padding: 0
+margin: 0
+content: 'INSERTED #1'
+content: 'INSERTED #2'
+border: 0
+display: flex
+
+Running test: testInsertPropertyInEmptyRule
+=== updated STYLE ===
+content: 'INSERTED PROPERTY'
+
+Running test: testInsertPropertyOutsideRule
+Expected protocol error: NotFoundError Editing in stylesheet scope should insert a single rule.
+
+Running test: testInsertBreakingPropertyInLastEmptyRule
+Expected protocol error: SyntaxError The property 'content: 'INSERTED PROPERTY'/*
+};' could not be set.
+
+Running test: testDisableProperty
+=== updated STYLE ===
+padding: 0
+/* margin: 0 */
+border: 0
+display: flex
+
+Running test: testInsertEmptyFirstRule
+=== updated RULE ===
+div {
+}
+==== Style sheet text ====
+div {}
+* {
+    box-sizing: border-box;
+}
+
+html, body, div, a {
+    /* resetting some properties */
+    padding: 0;
+    margin: 0;
+    border: 0;
+    display: flex; /* flex FTW! */
+}
+
+p:first-letter {
+    font-size: 200%;
+}
+
+.empty-rule {
+}
+
+
+Running test: testInsertEmptyLastRule
+=== updated RULE ===
+div {
+}
+==== Style sheet text ====
+* {
+    box-sizing: border-box;
+}
+
+html, body, div, a {
+    /* resetting some properties */
+    padding: 0;
+    margin: 0;
+    border: 0;
+    display: flex; /* flex FTW! */
+}
+
+p:first-letter {
+    font-size: 200%;
+}
+
+.empty-rule {
+}div { }
+
+
+Running test: testRedo
+=== updated RULE ===
+div {
+    content: 'INSERTED RULE'
+}
+==== Style sheet text ====
+* {
+    box-sizing: border-box;
+}
+
+html, body, div, a {
+    /* resetting some properties */
+    padding: 0;
+    margin: 0;
+    border: 0;
+    display: flex; /* flex FTW! */
+}
+div { content: 'INSERTED RULE'; }
+p:first-letter {
+    font-size: 200%;
+}
+
+.empty-rule {
+}
+
+
+Running test: testInvalidParameters
+Expected protocol error: range.startLine must be a non-negative integer
+
+Running test: testNegativeRangeParameters
+Expected protocol error: range.startLine must be a non-negative integer
+
+Running test: testStartLineOutOfBounds
+Expected protocol error: Specified range is out of bounds
+
+Running test: testEndLineOutOfBounds
+Expected protocol error: Specified range is out of bounds
+
+Running test: testStartColumnBeyondLastLineCharacter
+Expected protocol error: Specified range is out of bounds
+
+Running test: testEndColumnBeyondLastLineCharacter
+Expected protocol error: Specified range is out of bounds
+
+Running test: testInsertBeyondLastCharacterOfLastLine
+Expected protocol error: Specified range is out of bounds
+
+Running test: testReversedRange
+Expected protocol error: Range start must not succeed its end
+