Move handling of DraggableRegionsChanged notification from "view" to "frame".

extensions/renderer/extension_frame_helper.cc

Index: extensions/renderer/extension_frame_helper.cc
diff --git a/extensions/renderer/extension_frame_helper.cc b/extensions/renderer/extension_frame_helper.cc
index da47e687f5662c0d8eefb6830a860edf971c2689..b409b1c3c46244b0c3fa0c2b2c3f4095090ca0a0 100644
--- a/extensions/renderer/extension_frame_helper.cc
+++ b/extensions/renderer/extension_frame_helper.cc
@@ -8,6 +8,7 @@
 #include "base/strings/string_util.h"
 #include "base/timer/elapsed_timer.h"
 #include "content/public/renderer/render_frame.h"
+#include "content/public/renderer/render_view.h"
 #include "extensions/common/api/messaging/message.h"
 #include "extensions/common/api/messaging/port_id.h"
 #include "extensions/common/constants.h"
@@ -335,4 +336,19 @@ void ExtensionFrameHelper::OnDestruct() {
   delete this;
 }
 
+void ExtensionFrameHelper::DraggableRegionsChanged() {
+  blink::WebVector<blink::WebDraggableRegion> webregions =
+      render_frame()->GetWebFrame()->GetDocument().DraggableRegions();
+  std::vector<DraggableRegion> regions;
+  for (size_t i = 0; i < webregions.size(); ++i) {
+    DraggableRegion region;
+    render_frame()->GetRenderView()->ConvertViewportToWindowViaWidget(
+        &webregions[i].bounds);
+    region.bounds = webregions[i].bounds;
+    region.draggable = webregions[i].draggable;
+    regions.push_back(region);
+  }
+  Send(new ExtensionHostMsg_UpdateDraggableRegions(routing_id(), regions));
+}
+
 }  // namespace extensions