DevTools: [CSS] getMatchedStylesForNode should return styles inherited through shadow boundary

LayoutTests/inspector-protocol/css/css-add-rule-expected.txt

 The test verifies functionality of protocol method CSS.addRule.
 
 ==== Initial style sheet text ====
 #test {
     box-sizing: border-box;
 }
 
 #test {
     /* resetting some properties */
     line-height: 1;
@@ skipping 50 matching lines @@
     color: blue;
     display: flex;
 }
 @media (min-width: 1px)
     *#test* {    regular
         font-size: 200%;
     }
 @media (min-width: 1px)
     *#test* {    regular
     }
+Dumping inherited rules: 
 
 Running test: testAddRuleToStyleSheetEnding
 ==== Style sheet text ====
 #test {
     box-sizing: border-box;
 }
 
 #test {
     /* resetting some properties */
     line-height: 1;
@@ skipping 25 matching lines @@
 @media (min-width: 1px)
     *#test* {    regular
         font-size: 200%;
     }
 @media (min-width: 1px)
     *#test* {    regular
     }
 *#test* {    regular
     content: 'EDITED';
 }
+Dumping inherited rules: 
 
 Running test: testAddRuleToStyleSheetCenter
 ==== Style sheet text ====
 #test {
     box-sizing: border-box;
 }
 
 #test {
     /* resetting some properties */
     line-height: 1;
@@ skipping 25 matching lines @@
 *#test* {    regular
     content: 'EDITED';
 }
 @media (min-width: 1px)
     *#test* {    regular
         font-size: 200%;
     }
 @media (min-width: 1px)
     *#test* {    regular
     }
+Dumping inherited rules: 
 
 Running test: testAddRuleToRuleEnding
 ==== Style sheet text ====
 #test {
     box-sizing: border-box;
 }#test{
     content: 'EDITED';
 }
 
 #test {
@@ skipping 27 matching lines @@
     color: blue;
     display: flex;
 }
 @media (min-width: 1px)
     *#test* {    regular
         font-size: 200%;
     }
 @media (min-width: 1px)
     *#test* {    regular
     }
+Dumping inherited rules: 
 
 Running test: testAddRuleWithFormatting
 ==== Style sheet text ====
 #test {
     box-sizing: border-box;
 }
 
 #test{
     content: 'EDITED';
 }
@@ skipping 29 matching lines @@
     color: blue;
     display: flex;
 }
 @media (min-width: 1px)
     *#test* {    regular
         font-size: 200%;
     }
 @media (min-width: 1px)
     *#test* {    regular
     }
+Dumping inherited rules: 
 
 Running test: testAddRuleToMediaRuleBeginning
 ==== Style sheet text ====
 #test {
     box-sizing: border-box;
 }
 
 #test {
     /* resetting some properties */
     line-height: 1;
@@ skipping 26 matching lines @@
     *#test* {    regular
         content: 'EDITED';
     }
 @media (min-width: 1px)
     *#test* {    regular
         font-size: 200%;
     }
 @media (min-width: 1px)
     *#test* {    regular
     }
+Dumping inherited rules: 
 
 Running test: testAddRuleToMediaRuleCenter
 ==== Style sheet text ====
 #test {
     box-sizing: border-box;
 }
 
 #test {
     /* resetting some properties */
     line-height: 1;
@@ skipping 26 matching lines @@
     *#test* {    regular
         font-size: 200%;
     }
 @media (min-width: 1px)
     *#test* {    regular
         content: 'EDITED';
     }
 @media (min-width: 1px)
     *#test* {    regular
     }
+Dumping inherited rules: 
 
 Running test: testAddRuleToMediaRuleEnd
 ==== Style sheet text ====
 #test {
     box-sizing: border-box;
 }
 
 #test {
     /* resetting some properties */
     line-height: 1;
@@ skipping 26 matching lines @@
     *#test* {    regular
         font-size: 200%;
     }
 @media (min-width: 1px)
     *#test* {    regular
     }
 @media (min-width: 1px)
     *#test* {    regular
         content: 'EDITED';
     }
+Dumping inherited rules: 
 
 Running test: testInvalidRule
 Expected protocol error: SyntaxError Rule text is not valid.
 
 Running test: testAddingRuleInsideSelector
 Expected protocol error: NotFoundError Cannot insert rule inside rule selector.
 
 Running test: testAddingRuleBeforeRuleBody
 Expected protocol error: NotFoundError Cannot insert rule inside rule selector.
 
 Running test: testAddingRuleInsideMedia1
 Expected protocol error: NotFoundError Cannot insert rule inside rule selector.
 
 Running test: testAddingRuleInsideMedia2
 Expected protocol error: NotFoundError Cannot insert rule inside rule selector.
 
 Running test: testAddingRuleBeforeMediaBody
 Expected protocol error: NotFoundError Cannot insert rule inside rule selector.
 
 Running test: testAddingRuleInsideStyleRule
 Expected protocol error: NotFoundError Cannot insert rule in non-media rule.