aura: Don't lock resizes for auto-resize RWH

BUG=237354

Review URL: https://chromiumcodereview.appspot.com/14670013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@198827 0039d316-1c4b-4281-b951-d872f2087c98

content/browser/renderer_host/render_widget_host_impl.h

@@ -469,6 +469,10 @@ class CONTENT_EXPORT RenderWidgetHostImpl : virtual public RenderWidgetHost,
   // suppress_next_char_events_.
   void SuppressNextCharEvents();
 
+  // Indicates whether the renderer drives the RenderWidgetHosts's size or the
+  // other way around.
+  bool should_auto_resize() { return should_auto_resize_; }
+
  protected:
   virtual RenderWidgetHostImpl* AsRenderWidgetHostImpl() OVERRIDE;
 

content/browser/renderer_host/render_widget_host_view_aura.cc

@@ -783,7 +783,8 @@ void RenderWidgetHostViewAura::SetBounds(const gfx::Rect& rect) {
 
 void RenderWidgetHostViewAura::MaybeCreateResizeLock() {
   gfx::Size desired_size = window_->bounds().size();
-  if (!resize_lock_.get() &&
+  if (!host_->should_auto_resize() &&
+      !resize_lock_.get() &&
       desired_size != current_frame_size_ &&
       host_->is_accelerated_compositing_active()) {
     aura::RootWindow* root_window = window_->GetRootWindow();