Adds DevTools commands for forced viewport override.

content/browser/devtools/protocol/emulation_handler.cc

 // Copyright 2015 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.
 
 #include "content/browser/devtools/protocol/emulation_handler.h"
 
 #include <utility>
 
 #include "base/strings/string_number_conversions.h"
 #include "build/build_config.h"
@@ skipping 203 matching lines @@
   params.screenPosition = mobile ? blink::WebDeviceEmulationParams::Mobile :
       blink::WebDeviceEmulationParams::Desktop;
   if (screen_width && screen_height)
     params.screenSize = blink::WebSize(*screen_width, *screen_height);
   if (position_x && position_y)
     params.viewPosition = blink::WebPoint(*position_x, *position_y);
   params.deviceScaleFactor = device_scale_factor;
   params.viewSize = blink::WebSize(width, height);
   params.fitToView = fit_window;
   params.scale = optional_scale ? *optional_scale : 1;
-  params.offset = blink::WebFloatPoint(
-      optional_offset_x ? *optional_offset_x : 0.f,
-      optional_offset_y ? *optional_offset_y : 0.f);
   params.screenOrientationType = orientationType;
   params.screenOrientationAngle = orientationAngle;
 
   if (device_emulation_enabled_ && params == device_emulation_params_)
     return Response::OK();
 
   device_emulation_enabled_ = true;
   device_emulation_params_ = params;
   UpdateDeviceEmulationState();
   return Response::OK();
@@ skipping 51 matching lines @@
         widget_host->GetRoutingID(), device_emulation_params_));
   } else {
     widget_host->Send(new ViewMsg_DisableDeviceEmulation(
         widget_host->GetRoutingID()));
   }
 }
 
 }  // namespace emulation
 }  // namespace devtools
 }  // namespace content