Revert of Changed Blimp client to start with white screen before drawing contents

blimp/client/app/linux/blimp_display_manager.cc

Index: blimp/client/app/linux/blimp_display_manager.cc
diff --git a/blimp/client/app/linux/blimp_display_manager.cc b/blimp/client/app/linux/blimp_display_manager.cc
index 882c06bd232dd5b354cd995648948ac40e3022eb..79124999ca3dab260cedfd4e4e49bbb5db2a4f32 100644
--- a/blimp/client/app/linux/blimp_display_manager.cc
+++ b/blimp/client/app/linux/blimp_display_manager.cc
@@ -4,6 +4,7 @@
 
 #include "blimp/client/app/linux/blimp_display_manager.h"
 
+#include "blimp/client/feature/compositor/blimp_compositor_manager.h"
 #include "blimp/client/feature/render_widget_feature.h"
 #include "blimp/client/feature/tab_control_feature.h"
 #include "ui/events/event.h"
@@ -23,7 +24,7 @@
       delegate_(delegate),
       tab_control_feature_(tab_control_feature),
       blimp_compositor_manager_(
-          new BlimpCompositorManager(render_widget_feature, this)),
+          new BlimpCompositorManager(render_widget_feature)),
       platform_window_(new ui::X11Window(this)) {
   platform_window_->SetBounds(gfx::Rect(window_size));
   platform_window_->Show();
@@ -78,7 +79,5 @@
 
 void BlimpDisplayManager::OnActivationChanged(bool active) {}
 
-void BlimpDisplayManager::OnSwapBuffersCompleted() {}
-
 }  // namespace client
 }  // namespace blimp