[ChromeDriver] Support mobile emulation on desktop Chrome.

chrome/test/chromedriver/chrome/device_metrics.h

Index: chrome/test/chromedriver/chrome/device_metrics.h
diff --git a/chrome/test/chromedriver/chrome/device_metrics.h b/chrome/test/chromedriver/chrome/device_metrics.h
new file mode 100644
index 0000000000000000000000000000000000000000..bdea92402e019a1caa61b345b589d9539306d1fc
--- /dev/null
+++ b/chrome/test/chromedriver/chrome/device_metrics.h
@@ -0,0 +1,25 @@
+// Copyright (c) 2014 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.
+
+#ifndef CHROME_TEST_CHROMEDRIVER_CHROME_DEVICE_METRICS_H_
+#define CHROME_TEST_CHROMEDRIVER_CHROME_DEVICE_METRICS_H_
+
+class DeviceMetrics {

[samuong, 2014/05/09 17:58:54]

I think it was OK having this as a struct, otherwise we'd have to name the
member variables differently and create a whole set of accessor functions.

Rather than check if width<0, can't we just check whether device_metrics==NULL?
(this might involve using a scoped_ptr in Capabilities)

[sam.rawlins, 2014/05/16 21:09:38]

Done.

+ public:
+  DeviceMetrics();
+  DeviceMetrics(int width, int height, double device_scale_factor);
+  ~DeviceMetrics();
+
+  bool IsValid() const;
+
+  int width;
+  int height;
+  double device_scale_factor;
+  bool emulate_viewport;
+  bool fit_window;
+  bool text_autosizing;
+  double font_scale_factor;
+};
+
+#endif  // CHROME_TEST_CHROMEDRIVER_CHROME_DEVICE_METRICS_H_