Remove unused field from WebContentsViewAura and add comment as to why

content/browser/web_contents/web_contents_view_aura.cc

Index: content/browser/web_contents/web_contents_view_aura.cc
diff --git a/content/browser/web_contents/web_contents_view_aura.cc b/content/browser/web_contents/web_contents_view_aura.cc
index 42b2ff26d4249b8808d4ce7d49b8661811acb408..01460c7fd2a3213ad28dea9a3a6d82ee86f68c7c 100644
--- a/content/browser/web_contents/web_contents_view_aura.cc
+++ b/content/browser/web_contents/web_contents_view_aura.cc
@@ -251,7 +251,9 @@ void WebContentsViewAura::EndDrag(WebKit::WebDragOperationsMask ops) {
 // WebContentsViewAura, WebContentsView implementation:
 
 void WebContentsViewAura::CreateView(const gfx::Size& initial_size) {
-  initial_size_ = initial_size;
+  // NOTE: we ignore |initial_size| since in some cases it's wrong (such as
+  // if the bookmark bar is not shown and you create a new tab). The right
+  // value is set shortly after this, so its safe to ignore.
 
   window_.reset(new aura::Window(this));
   window_->set_owned_by_parent(false);