Delete background tab IOSurfaces on Mac.

content/browser/renderer_host/render_widget_host_unittest.cc

Index: content/browser/renderer_host/render_widget_host_unittest.cc
diff --git a/content/browser/renderer_host/render_widget_host_unittest.cc b/content/browser/renderer_host/render_widget_host_unittest.cc
index 8f5c465a87afac5d1ce457c4bf42671f85df3d1e..27ea7a0915bf03d2ff4694e884eea0a75c5be90b 100644
--- a/content/browser/renderer_host/render_widget_host_unittest.cc
+++ b/content/browser/renderer_host/render_widget_host_unittest.cc
@@ -508,6 +508,11 @@ TEST_F(RenderWidgetHostTest, Background) {
 // Tests getting the backing store with the renderer not setting repaint ack
 // flags.
 TEST_F(RenderWidgetHostTest, GetBackingStore_NoRepaintAck) {
+  // First set the view size to match what the renderer is rendering.
+  ViewHostMsg_UpdateRect_Params params;
+  process_->InitUpdateRectParams(&params);
+  view_->set_bounds(gfx::Rect(params.view_size));
+
   // We don't currently have a backing store, and if the renderer doesn't send
   // one in time, we should get nothing.
   process_->set_update_msg_should_reply(false);
@@ -534,6 +539,11 @@ TEST_F(RenderWidgetHostTest, GetBackingStore_NoRepaintAck) {
 
 // Tests getting the backing store with the renderer sending a repaint ack.
 TEST_F(RenderWidgetHostTest, GetBackingStore_RepaintAck) {
+  // First set the view size to match what the renderer is rendering.
+  ViewHostMsg_UpdateRect_Params params;
+  process_->InitUpdateRectParams(&params);
+  view_->set_bounds(gfx::Rect(params.view_size));
+
   // Doing a request request with the update message allowed should work and
   // the repaint ack should work.
   process_->set_update_msg_should_reply(true);