Scale tickmark's coordinates to dip to viewport in use-zoom-for-dfs mode

content/renderer/pepper/pepper_plugin_instance_impl.cc

Index: content/renderer/pepper/pepper_plugin_instance_impl.cc
diff --git a/content/renderer/pepper/pepper_plugin_instance_impl.cc b/content/renderer/pepper/pepper_plugin_instance_impl.cc
index 120a266411ddb06b6f9b603d19c19fd58d13cb2f..238ac71cb650009706a61b3a0c279f3e946a171b 100644
--- a/content/renderer/pepper/pepper_plugin_instance_impl.cc
+++ b/content/renderer/pepper/pepper_plugin_instance_impl.cc
@@ -119,6 +119,7 @@
 #include "third_party/WebKit/public/web/WebView.h"
 #include "third_party/khronos/GLES2/gl2.h"
 #include "ui/events/blink/blink_event_util.h"
+#include "ui/gfx/geometry/rect_conversions.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/gfx/image/image_skia_rep.h"
 #include "ui/gfx/range/range.h"
@@ -2598,10 +2599,12 @@ void PepperPluginInstanceImpl::SetTickmarks(PP_Instance instance,
   blink::WebVector<blink::WebRect> tickmarks_converted(
       static_cast<size_t>(count));
   for (uint32_t i = 0; i < count; ++i) {
-    tickmarks_converted[i] = blink::WebRect(tickmarks[i].point.x,
-                                            tickmarks[i].point.y,
-                                            tickmarks[i].size.width,
-                                            tickmarks[i].size.height);
+    gfx::RectF tickmark(tickmarks[i].point.x,
+                        tickmarks[i].point.y,
+                        tickmarks[i].size.width,
+                        tickmarks[i].size.height);
+    tickmark.Scale(1 / viewport_to_dip_scale_);
+    tickmarks_converted[i] = blink::WebRect(gfx::ToEnclosedRect(tickmark));
   }
   blink::WebLocalFrame* frame = render_frame_->GetWebFrame();
   frame->setTickmarks(tickmarks_converted);