browser: Remove fullscreen functions and have callers call FullscreenController directly.

chrome/browser/ui/cocoa/fullscreen_exit_bubble_controller.mm

Index: chrome/browser/ui/cocoa/fullscreen_exit_bubble_controller.mm
diff --git a/chrome/browser/ui/cocoa/fullscreen_exit_bubble_controller.mm b/chrome/browser/ui/cocoa/fullscreen_exit_bubble_controller.mm
index 5d38d73a984ecc567e36f49c8c92c60181b9d666..96ef5d2e30a69d948dc405dacee4c975338dc7cf 100644
--- a/chrome/browser/ui/cocoa/fullscreen_exit_bubble_controller.mm
+++ b/chrome/browser/ui/cocoa/fullscreen_exit_bubble_controller.mm
@@ -95,13 +95,13 @@ const float kHideDuration = 0.7;
     [[self window] setIgnoresMouseEvents:YES];
 
   DCHECK(fullscreen_bubble::ShowButtonsForType(bubbleType_));
-  browser_->OnAcceptFullscreenPermission(
+  browser_->fullscreen_controller()->OnAcceptFullscreenPermission(
       url_, bubbleType_);
 }
 
 - (void)deny:(id)sender {
   DCHECK(fullscreen_bubble::ShowButtonsForType(bubbleType_));
-  browser_->OnDenyFullscreenPermission(bubbleType_);
+  browser_->fullscreen_controller()->OnDenyFullscreenPermission(bubbleType_);
 }
 
 - (void)showButtons:(BOOL)show {