Allows fullscreen to be triggered with the key events used for scrolling.

cc/input/top_controls_manager.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/input/top_controls_manager.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/time.h"
@@ skipping 37 matching lines @@
       top_controls_show_height_(
           top_controls_height * top_controls_hide_threshold),
       top_controls_hide_height_(
           top_controls_height * (1.f - top_controls_show_threshold)) {
   CHECK(client_);
 }
 
 TopControlsManager::~TopControlsManager() {
 }
 
+void TopControlsManager::UpdateTopControlsStatePreservingConstraints(
+    TopControlsState current,
+    bool animate) {
+  UpdateTopControlsState(permitted_state_, current, animate);
+}
+
 void TopControlsManager::UpdateTopControlsState(TopControlsState constraints,
                                                 TopControlsState current,
                                                 bool animate) {
   DCHECK(!(constraints == SHOWN && current == HIDDEN));
   DCHECK(!(constraints == HIDDEN && current == SHOWN));
 
   permitted_state_ = constraints;
 
   // Don't do anything if it doesn't matter which state the controls are in.
   if (constraints == BOTH && current == BOTH)
@@ skipping 153 matching lines @@
 
   if ((animation_direction_ == SHOWING_CONTROLS && new_offset >= 0) ||
       (animation_direction_ == HIDING_CONTROLS
           && new_offset <= -top_controls_height_)) {
     return true;
   }
   return false;
 }
 
 }  // namespace cc