[DevTools] Initial implementation of device modes.

Source/devtools/front_end/main/Main.js

Index: Source/devtools/front_end/main/Main.js
diff --git a/Source/devtools/front_end/main/Main.js b/Source/devtools/front_end/main/Main.js
index 2c94e2245b791306f19c33d3842dd92e4a04f866..7ec605fc4936de0a9c3662d994f07265de9b9450 100644
--- a/Source/devtools/front_end/main/Main.js
+++ b/Source/devtools/front_end/main/Main.js
@@ -127,6 +127,7 @@ WebInspector.Main.prototype = {
         Runtime.experiments.register("blackboxJSFramesOnTimeline", "Blackbox JavaScript frames on Timeline");
         Runtime.experiments.register("timelineDetailsChart", "Costly functions view in Timeline details", true);
         Runtime.experiments.register("customObjectFormatters", "Custom object formatters", true);
+        Runtime.experiments.register("deviceArt", "Device art in Device Mode", true);

[pfeldman, 2015/06/13 06:48:59]

It is rather a deviceInsets at this point. Lets separate insets from art and
implement it first.

[dgozman, 2015/06/16 15:09:30]

Renamed to device modes.

         Runtime.experiments.register("emptySourceMapAutoStepping", "Empty sourcemap auto-stepping");
         Runtime.experiments.register("fileSystemInspection", "FileSystem inspection");
         Runtime.experiments.register("filmStripInNetworkAndTimeline", "Filmstrip in Network and Timeline Panel", true);