DevTools: remove BreakpointsSidebarPaneBase and breakpointsList.css

third_party/WebKit/Source/devtools/front_end/sources/javaScriptBreakpointsSidebarPane.css

+/*
+ * Copyright 2017 The Chromium Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+.breakpoint-entry {
+    padding: 3px 8px 3px 8px;
+    min-height: 18px;
+    line-height: 15px;
+    border-top: 1px solid #efefef;
+}
+
+.breakpoint-entry [is=dt-checkbox] {
+    max-width: 100%;
+    white-space: nowrap;
+}
+
+:not(.breakpoints-list-deactivated) > .breakpoint-entry:hover {
+    background-color: #eee;
+}
+
+.breakpoint-entry > .source-text {
+    cursor: pointer;
+    text-overflow: ellipsis;
+    overflow: hidden;
+    white-space: nowrap;
+}
+
+.breakpoints-list-deactivated {
+    background-color: #eee;
+    opacity: 0.3;
+}
+
+.breakpoint-hit {
+    background-color: rgb(255, 255, 194);
+}
+
+:host-context(.-theme-with-dark-background) .breakpoint-hit {
+    background-color: hsl(46, 98%, 22%);
+    color: #ccc;
+}