Compute the popup location/size correctly when use-zoom-for-dsf is enabled.

content/shell/renderer/layout_test/blink_test_runner.cc

 // Copyright (c) 2012 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/shell/renderer/layout_test/blink_test_runner.h"
 
 #include <algorithm>
 #include <clocale>
 #include <cmath>
 
@@ skipping 502 matching lines @@
 }
 
 void BlinkTestRunner::SetDeviceScaleFactor(float factor) {
   if (device_scale_factor_ == factor)
     return;
   device_scale_factor_ = factor;
   content::SetDeviceScaleFactor(render_view(), factor);
   Send(new ShellViewHostMsg_SetDeviceScaleFactor(routing_id(), factor));
 }
 
+void BlinkTestRunner::EnableUseZoomForDSF() {
+  base::CommandLine::ForCurrentProcess()->
+      AppendSwitch(switches::kEnableUseZoomForDSF);
+}
+
 void BlinkTestRunner::SetDeviceColorProfile(const std::string& name) {
   content::SetDeviceColorProfile(render_view(), name);
 }
 
 void BlinkTestRunner::SetBluetoothMockDataSet(const std::string& name) {
   Send(new LayoutTestHostMsg_SetBluetoothAdapter(name));
   // Auto-reset the chooser type so we don't get order dependence when some
   // tests forget to do it explicitly.
   Send(new ShellViewHostMsg_SetBluetoothManualChooser(routing_id(), false));
 }
@@ skipping 467 matching lines @@
   get_bluetooth_events_callbacks_.pop_front();
   callback.Run(events);
 }
 
 void BlinkTestRunner::ReportLeakDetectionResult(
     const LeakDetectionResult& report) {
   Send(new ShellViewHostMsg_LeakDetectionDone(routing_id(), report));
 }
 
 }  // namespace content