Implement HiDPI support in Pepper dev interface

webkit/plugins/ppapi/ppapi_plugin_instance.cc

Index: webkit/plugins/ppapi/ppapi_plugin_instance.cc
diff --git a/webkit/plugins/ppapi/ppapi_plugin_instance.cc b/webkit/plugins/ppapi/ppapi_plugin_instance.cc
index 5cb484f53717ca31d0695b18b16b13e376140ad8..2ae47b5e482e1b58106081826ef07b2aad7bc312 100644
--- a/webkit/plugins/ppapi/ppapi_plugin_instance.cc
+++ b/webkit/plugins/ppapi/ppapi_plugin_instance.cc
@@ -750,6 +750,18 @@ void PluginInstance::ViewChanged(const gfx::Rect& position,
   view_data_.rect = PP_FromGfxRect(position);
   view_data_.clip_rect = PP_FromGfxRect(clip);
 
+#if WEBPLUGINCONTAINER_HAS_GETDEVICESCALEFACTOR
+  view_data_.device_scale = container_->getDeviceScaleFactor();
+#else
+  view_data_.device_scale = 1.0f;
+#endif  // WEBPLUGINCONTAINER_HAS_GETDEVICESCALEFACTOR
+
+#if WEBPLUGINCONTAINER_HAS_GETPAGEZOOMFACTOR
+  view_data_.css_scale = container_->getPageZoomFactor();
+#else
+  view_data_.css_scale = 1.0f;
+#endif  // WEBPLUGINCONTAINER_HAS_GETPAGEZOOMFACTOR
+
   if (desired_fullscreen_state_ || view_data_.is_fullscreen) {
     WebElement element = container_->element();
     WebDocument document = element.document();