DevTools: introduce the Clear storage pane in the resources panel.

third_party/WebKit/Source/devtools/front_end/resources/clearStorageView.css

Index: third_party/WebKit/Source/devtools/front_end/resources/clearStorageView.css
diff --git a/third_party/WebKit/Source/devtools/front_end/resources/clearStorageView.css b/third_party/WebKit/Source/devtools/front_end/resources/clearStorageView.css
new file mode 100644
index 0000000000000000000000000000000000000000..20bde65e425e4c9b062ebc4d6242ce5cd0b4eb79
--- /dev/null
+++ b/third_party/WebKit/Source/devtools/front_end/resources/clearStorageView.css
@@ -0,0 +1,25 @@
+/*
+ * Copyright 2016 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.
+ */
+
+.report-row {
+    display: flex;
+    align-items: center;
+}
+
+.clear-storage-button .report-row {
+    margin: 0;
+    display: flex;
+    justify-content: flex-end;
+}
+
+.link {
+    margin-left: 10px;
+    display: none;
+}
+
+.report-row:hover .link {
+    display: inline;
+}