DevTools: refactor and fix bugs for DOMBreakpointsSidebarPane

third_party/WebKit/LayoutTests/inspector/sources/debugger-breakpoints/dom-breakpoints-expected.txt

Index: third_party/WebKit/LayoutTests/inspector/sources/debugger-breakpoints/dom-breakpoints-expected.txt
diff --git a/third_party/WebKit/LayoutTests/inspector/sources/debugger-breakpoints/dom-breakpoints-expected.txt b/third_party/WebKit/LayoutTests/inspector/sources/debugger-breakpoints/dom-breakpoints-expected.txt
index 13c4150a6be5f6bb95e42f4ced7ceb95637cefaa..fe11e8919ed49d9c521444ae25a679d469394bed 100644
--- a/third_party/WebKit/LayoutTests/inspector/sources/debugger-breakpoints/dom-breakpoints-expected.txt
+++ b/third_party/WebKit/LayoutTests/inspector/sources/debugger-breakpoints/dom-breakpoints-expected.txt
@@ -12,6 +12,22 @@ Call stack:
 Paused on a "Subtree Modified" breakpoint set on div#rootElement, because a new child was added to that node.
 Script execution resumed.
 
+Running: testBreakpointToggle
+Test that 'Attribute Modified' breakpoint toggles properly.
+Set 'Attribute Modified' DOM breakpoint on rootElement.
+Uncheck 'Attribute Modified' DOM breakpoint on rootElement.
+Modify attribute for rootElement.
+Test that 'Attribute Modified' breakpoint is not hit when disabled.
+Check 'Attribute Modified' DOM breakpoint on rootElement.
+Modify attribute for rootElement.
+Test that 'Attribute Modified' breakpoint is hit when re-enabled.
+Script execution paused.
+Call stack:
+    0) modifyAttribute (dom-breakpoints.html:18)
+    1)  (:1)
+Paused on a "Attribute Modified" breakpoint set on div#rootElement.
+Script execution resumed.
+
 Running: testInsertGrandchild
 Test that 'Subtree Modified' breakpoint is hit when appending a grandchild.
 Append grandchildElement to childElement.
@@ -58,6 +74,8 @@ Call stack:
     1)  (:1)
 Paused on a "Attribute Modified" breakpoint set on div#rootElement.
 Script execution resumed.
+Ensure the breakpoint is actually removed.
+Modify rootElement data-test attribute.
 
 Running: testModifyAttrNode
 Test that 'Attribute Modified' breakpoint is hit when modifying Attr node.