Bottom browser controls position based on window height

chrome/browser/android/compositor/layer/tab_layer.cc

 // Copyright 2014 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 "chrome/browser/android/compositor/layer/tab_layer.h"
 
 #include "base/i18n/rtl.h"
 #include "base/memory/ptr_util.h"
 #include "cc/layers/layer.h"
 #include "cc/layers/layer_collections.h"
@@ skipping 217 matching lines @@
   //--------------------------------------------------------------------------
 
   // TODO(kkimlabs): Tab switcher doesn't show the progress bar.
   toolbar_layer_->PushResource(toolbar_resource_id,
                                toolbar_background_color,
                                anonymize_toolbar,
                                toolbar_textbox_background_color,
                                toolbar_textbox_resource_id,
                                toolbar_textbox_alpha,
                                view_height,
+                               // TODO(mdjones): Feels odd to pass 0 here when
+                               // we have access to toolbar_y_offset.
+                               0,
                                false,
                                false,
                                browser_controls_at_bottom);
   toolbar_layer_->UpdateProgressBar(0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
   float toolbar_impact_height = 0;
-  if (show_toolbar && !back_visible)
+  if (show_toolbar && !back_visible && !browser_controls_at_bottom)
     toolbar_impact_height = toolbar_layer_->layer()->bounds().height();
 
   //----------------------------------------------------------------------------
   // Compute Alpha and Visibility
   //----------------------------------------------------------------------------
   border_alpha *= alpha;
   contour_alpha *= alpha;
   shadow_alpha *= alpha;
   close_alpha *= alpha;
   toolbar_alpha *= alpha;
@@ skipping 423 matching lines @@
       title_->RemoveAllChildren();
       title_->AddChild(layer);
     }
   }
 
   if (title)
     title->SetUIResourceIds();
 }
 
 }  //  namespace android