Fix page zoom to be frame-centric for out-of-process frames.

content/browser/frame_host/cross_process_frame_connector.cc

Index: content/browser/frame_host/cross_process_frame_connector.cc
diff --git a/content/browser/frame_host/cross_process_frame_connector.cc b/content/browser/frame_host/cross_process_frame_connector.cc
index b5e415ced16124ab9c7b22272546a422fa03fedb..d5b87fc3095f66b29d4d660894355aaa4825a157 100644
--- a/content/browser/frame_host/cross_process_frame_connector.cc
+++ b/content/browser/frame_host/cross_process_frame_connector.cc
@@ -199,8 +199,13 @@ void CrossProcessFrameConnector::OnForwardInputEvent(
 
 void CrossProcessFrameConnector::OnFrameRectChanged(
     const gfx::Rect& frame_rect) {
-  if (!frame_rect.size().IsEmpty())
+  // Don't propagate these messages to WebViews.
+  if (!frame_rect.size().IsEmpty() &&
+      !frame_proxy_in_parent_renderer_->frame_tree_node()
+           ->render_manager()
+           ->ForInnerDelegate()) {
     SetRect(frame_rect);
+  }
 }
 
 void CrossProcessFrameConnector::OnVisibilityChanged(bool visible) {