Add display::GetDisplayNearestView

content/browser/renderer_host/render_widget_host_impl.cc

Index: content/browser/renderer_host/render_widget_host_impl.cc
diff --git a/content/browser/renderer_host/render_widget_host_impl.cc b/content/browser/renderer_host/render_widget_host_impl.cc
index d5f2a617cc7ced2cc2b1211b1c57645ab9db3e88..57bbea7b6b7982924e24de3791c9febe4c6cb6a5 100644
--- a/content/browser/renderer_host/render_widget_host_impl.cc
+++ b/content/browser/renderer_host/render_widget_host_impl.cc
@@ -1423,8 +1423,7 @@ void RenderWidgetHostImpl::NotifyScreenInfoChanged() {
   WasResized();
 
   if (touch_emulator_) {

[tapted, 2017/02/15 00:36:10]

nit: curlies not needed

[Jinsuk Kim, 2017/02/16 10:11:25]

Done.

-    touch_emulator_->SetDeviceScaleFactor(
-        view_.get() ? content::GetScaleFactorForView(view_.get()) : 1.0f);
+    touch_emulator_->SetDeviceScaleFactor(GetScaleFactorForView(view_.get()));
   }
 }
 
@@ -1959,9 +1958,8 @@ void RenderWidgetHostImpl::SetTouchEventEmulationEnabled(
     bool enabled, ui::GestureProviderConfigType config_type) {
   if (enabled) {
     if (!touch_emulator_) {
-      touch_emulator_.reset(new TouchEmulator(
-          this,
-          view_.get() ? content::GetScaleFactorForView(view_.get()) : 1.0f));
+      touch_emulator_.reset(

[tapted, 2017/02/15 00:36:10]

touch_emulator_ = base::MakeUnique<TouchEmulator>(..)

[Jinsuk Kim, 2017/02/16 10:11:24]

Done.

+          new TouchEmulator(this, GetScaleFactorForView(view_.get())));
     }
     touch_emulator_->Enable(config_type);
   } else {