DevTools: [CodeMirror] roll codemirror to v4.4.1

LayoutTests/inspector/editor/editor-test.js

Index: LayoutTests/inspector/editor/editor-test.js
diff --git a/LayoutTests/inspector/editor/editor-test.js b/LayoutTests/inspector/editor/editor-test.js
index 326ac2da05325e3f4514af997851542e1567a411..d6471fb72c4957d3724e06d4ae9fe2bffe047e9e 100644
--- a/LayoutTests/inspector/editor/editor-test.js
+++ b/LayoutTests/inspector/editor/editor-test.js
@@ -5,8 +5,8 @@ InspectorTest.createTestEditor = function(clientHeight, textEditorDelegate)
 {
     runtime.loadModule("source_frame");
     var textEditor = new WebInspector.CodeMirrorTextEditor("", textEditorDelegate || new WebInspector.TextEditorDelegate());
-    if (clientHeight)
-        textEditor.element.style.height = clientHeight + "px";
+    clientHeight = clientHeight || 100;
+    textEditor.element.style.height = clientHeight + "px";
     textEditor.element.style.flex = "none";
     textEditor.show(WebInspector.inspectorView.element);
     return textEditor;