[DevTools] UI for network conditions emulation.

Source/devtools/front_end/ui/SettingsUI.js

Index: Source/devtools/front_end/ui/SettingsUI.js
diff --git a/Source/devtools/front_end/ui/SettingsUI.js b/Source/devtools/front_end/ui/SettingsUI.js
index a3dc3f0018b29d92582ff889e218cebe382712cf..210bbbee721e08aedece1376f1504acfa0a6106e 100644
--- a/Source/devtools/front_end/ui/SettingsUI.js
+++ b/Source/devtools/front_end/ui/SettingsUI.js
@@ -109,6 +109,7 @@ WebInspector.SettingsUI.createSettingInputField = function(label, setting, numer
         inputElement.addEventListener("change", onInput, false);
         inputElement.addEventListener("input", onInput, false);
     }
+    inputElement.addEventListener("keydown", onKeyDown, false);
 
     var errorMessageLabel;
     if (validatorCallback) {
@@ -125,6 +126,12 @@ WebInspector.SettingsUI.createSettingInputField = function(label, setting, numer
             apply();
     }
 
+    function onKeyDown(event)
+    {
+        if (isEnterKey(event))
+            apply();
+    }
+
     function validate()
     {
         var error = validatorCallback(inputElement.value);