Variety of tweaks to View API.

chrome/browser/ui/views/frame/browser_root_view.cc

Index: chrome/browser/ui/views/frame/browser_root_view.cc
===================================================================
--- chrome/browser/ui/views/frame/browser_root_view.cc	(revision 86084)
+++ chrome/browser/ui/views/frame/browser_root_view.cc	(working copy)
@@ -28,7 +28,7 @@
 bool BrowserRootView::GetDropFormats(
       int* formats,
       std::set<ui::OSExchangeData::CustomFormat>* custom_formats) {
-  if (tabstrip() && tabstrip()->IsVisible()) {
+  if (tabstrip() && tabstrip()->visible()) {
     *formats = ui::OSExchangeData::URL | ui::OSExchangeData::STRING;
     return true;
   }
@@ -40,7 +40,7 @@
 }
 
 bool BrowserRootView::CanDrop(const ui::OSExchangeData& data) {
-  if (!tabstrip() || !tabstrip()->IsVisible())
+  if (!tabstrip() || !tabstrip()->visible())
     return false;
 
   // If there is a URL, we'll allow the drop.
@@ -116,7 +116,7 @@
 
 bool BrowserRootView::ShouldForwardToTabStrip(
     const views::DropTargetEvent& event) {
-  if (!tabstrip()->IsVisible())
+  if (!tabstrip()->visible())
     return false;
 
   // Allow the drop as long as the mouse is over the tabstrip or vertically