[ChromeDriver] Support mobile emulation on desktop Chrome.

chrome/test/chromedriver/chrome/web_view_impl.cc

Index: chrome/test/chromedriver/chrome/web_view_impl.cc
diff --git a/chrome/test/chromedriver/chrome/web_view_impl.cc b/chrome/test/chromedriver/chrome/web_view_impl.cc
index 052ceb45b8fe886bbe7d2d459ca5a78d468b63da..fcbe34205cff9320755fb1f97e280dc68b987906 100644
--- a/chrome/test/chromedriver/chrome/web_view_impl.cc
+++ b/chrome/test/chromedriver/chrome/web_view_impl.cc
@@ -14,6 +14,7 @@
 #include "base/time/time.h"
 #include "base/values.h"
 #include "chrome/test/chromedriver/chrome/debugger_tracker.h"
+#include "chrome/test/chromedriver/chrome/device_metrics_override_manager.h"
 #include "chrome/test/chromedriver/chrome/devtools_client_impl.h"
 #include "chrome/test/chromedriver/chrome/dom_tracker.h"
 #include "chrome/test/chromedriver/chrome/frame_tracker.h"
@@ -123,6 +124,8 @@ WebViewImpl::WebViewImpl(const std::string& id,
       dialog_manager_(new JavaScriptDialogManager(client.get())),
       geolocation_override_manager_(
           new GeolocationOverrideManager(client.get())),
+      device_metrics_override_manager_(
+          new DeviceMetricsOverrideManager(client.get())),
       heap_snapshot_taker_(new HeapSnapshotTaker(client.get())),
       debugger_(new DebuggerTracker(client.get())),
       client_(client.release()) {}
@@ -366,6 +369,10 @@ Status WebViewImpl::OverrideGeolocation(const Geoposition& geoposition) {
   return geolocation_override_manager_->OverrideGeolocation(geoposition);
 }
 
+Status WebViewImpl::OverrideDeviceMetrics(const DeviceMetrics& device_metrics) {
+  return device_metrics_override_manager_->OverrideDeviceMetrics(device_metrics);

[stgao, 2014/04/30 03:32:55]

Over 80 chars.

+}
+
 Status WebViewImpl::CaptureScreenshot(std::string* screenshot) {
   base::DictionaryValue params;
   scoped_ptr<base::DictionaryValue> result;