Make the extension's sidebar pane auto-resizable.

third_party/WebKit/Source/devtools/front_end/extensions/ExtensionAPI.js

Index: third_party/WebKit/Source/devtools/front_end/extensions/ExtensionAPI.js
diff --git a/third_party/WebKit/Source/devtools/front_end/extensions/ExtensionAPI.js b/third_party/WebKit/Source/devtools/front_end/extensions/ExtensionAPI.js
index 850fb24d9c3f1737340aa37303ce23587c604a98..d4e00b00714585f20799d34e8f456359a97ac0e0 100644
--- a/third_party/WebKit/Source/devtools/front_end/extensions/ExtensionAPI.js
+++ b/third_party/WebKit/Source/devtools/front_end/extensions/ExtensionAPI.js
@@ -81,7 +81,6 @@ function defineCommonExtensionSymbols(apiPrivate)
         SetOpenResourceHandler: "setOpenResourceHandler",
         SetResourceContent: "setResourceContent",
         SetSidebarContent: "setSidebarContent",
-        SetSidebarHeight: "setSidebarHeight",
         SetSidebarPage: "setSidebarPage",
         ShowPanel: "showPanel",
         StopAuditCategoryRun: "stopAuditCategoryRun",
@@ -379,15 +378,31 @@ function defineDeprecatedProperty(object, className, oldName, newName)
     var warningGiven = false;
     function getter()
     {
-        if (!warningGiven) {
-            console.warn(className + "." + oldName + " is deprecated. Use " + className + "." + newName + " instead");
-            warningGiven = true;
-        }
+        if (warningGiven)
+          return;

[caseq, 2016/04/20 23:00:47]

please revert this -- this is a different case, we are supposed to return the
new property even after we issued the warning.

+
+        console.warn(className + "." + oldName + " is deprecated. Use " + className + "." + newName + " instead");
+        warningGiven = true;
+
         return object[newName];
     }
     object.__defineGetter__(oldName, getter);
 }
 
+function defineDeprecatedMethod(object, className, oldName)
+{
+    var warningGiven = false;
+    function noop()
+    {
+        if (warningGiven)
+          return;

[caseq, 2016/04/20 23:00:47]

indent 4 spaces, please.

+
+        console.warn(className + "." + oldName + " is deprecated, please don't use it. It is a no-op.");
+        warningGiven = true;
+    }
+    object[oldName] = noop.bind(null);

[caseq, 2016/04/20 23:00:47]

we don't use this in noop, so I guess you can just remove bind here.

+}
+
 function extractCallbackArgument(args)
 {
     var lastArgument = args[args.length - 1];
@@ -481,14 +496,10 @@ ExtensionPanelImpl.prototype = {
 function ExtensionSidebarPaneImpl(id)
 {
     ExtensionViewImpl.call(this, id);
+    defineDeprecatedMethod(this, "ExtensionSidebarPane", "setHeight");
 }
 
 ExtensionSidebarPaneImpl.prototype = {
-    setHeight: function(height)
-    {
-        extensionServer.sendRequest({ command: commands.SetSidebarHeight, id: this._id, height: height });
-    },
-
     setExpression: function(expression, rootTitle, evaluateOptions)
     {
         var request = {