Route selection bounds updates through the compositor

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 5afb35d3ee61214ba6724785ebde7a2d0158b34e..c6b6dd3953073d0dd84e7228d8050de539770ad3 100644
--- a/content/browser/renderer_host/render_widget_host_impl.cc
+++ b/content/browser/renderer_host/render_widget_host_impl.cc
@@ -118,6 +118,27 @@ int GetInputRouterViewFlagsFromCompositorFrameMetadata(
   return view_flags;
 }
 
+// TODO(jdduke): Remove when all platforms use CompositorFrameMetadata directly
+// and ViewHostMsg_SelectionBounds_Params is no long necessary.
+bool GetSelectionBounds(const cc::CompositorFrameMetadata& metadata,
+                        ViewHostMsg_SelectionBounds_Params* bounds) {
+  if (metadata.start_selection_handle.type == cc::SelectionHandle::IGNORED)
+    return false;
+  ViewHostMsg_SelectionBounds_Params params;
+  bounds->anchor_rect = metadata.start_selection_handle.bounds;
+  bounds->focus_rect = metadata.end_selection_handle.bounds;
+  if (metadata.start_selection_handle.type == cc::SelectionHandle::CENTER)
+    bounds->focus_rect = bounds->anchor_rect;
+  // TODO(jdduke): Determine from data.
+  bounds->anchor_dir = blink::WebTextDirectionDefault;
+  bounds->focus_dir = blink::WebTextDirectionDefault;
+  bounds->is_anchor_first =
+      metadata.start_selection_handle.type == cc::SelectionHandle::LEFT;
+  bounds->is_anchor_visible = metadata.start_selection_handle.visible;
+  bounds->is_focus_visible = metadata.end_selection_handle.visible;
+  return true;
+}
+
 // Implements the RenderWidgetHostIterator interface. It keeps a list of
 // RenderWidgetHosts, and makes sure it returns a live RenderWidgetHost at each
 // iteration (or NULL if there isn't any left).
@@ -1483,6 +1504,10 @@ bool RenderWidgetHostImpl::OnSwapCompositorFrame(
       GetInputRouterViewFlagsFromCompositorFrameMetadata(frame->metadata));
 
   if (view_) {
+    ViewHostMsg_SelectionBounds_Params bounds;
+    if (GetSelectionBounds(frame->metadata, &bounds))
+      OnSelectionBoundsChanged(bounds);
+
     view_->OnSwapCompositorFrame(output_surface_id, frame.Pass());
     view_->DidReceiveRendererFrame();
   } else {