Stop using chrome/browser/ui/views/bubble/bubble.h in fullscreen exit bubble.

chrome/browser/ui/views/fullscreen_exit_bubble_views.cc

Index: chrome/browser/ui/views/fullscreen_exit_bubble_views.cc
diff --git a/chrome/browser/ui/views/fullscreen_exit_bubble_views.cc b/chrome/browser/ui/views/fullscreen_exit_bubble_views.cc
index 1fe63911c0db2c8cdf0a31c19aa7ede8ddf1b405..abdf061a5d405d8bc45f652e722e0c358b3139e5 100644
--- a/chrome/browser/ui/views/fullscreen_exit_bubble_views.cc
+++ b/chrome/browser/ui/views/fullscreen_exit_bubble_views.cc
@@ -7,7 +7,6 @@
 #include "base/message_loop.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"
-#include "chrome/browser/ui/views/bubble/bubble.h"
 #include "grit/generated_resources.h"
 #include "ui/base/animation/slide_animation.h"
 #include "ui/base/keycodes/keyboard_codes.h"
@@ -81,7 +80,6 @@ FullscreenExitBubbleViews::FullscreenExitView::FullscreenExitView(
 
   views::BubbleBorder* bubble_border =
       new views::BubbleBorder(views::BubbleBorder::NONE);
-  bubble_border->set_background_color(Bubble::kBackgroundColor);
   set_background(new views::BubbleBackground(bubble_border));
   set_border(bubble_border);
   set_focusable(false);