Fix some grammar in chrome/browser/ui/views/

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

 // Copyright (c) 2012 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/ui/views/frame/browser_view_layout.h"
 
 #include "chrome/browser/ui/find_bar/find_bar.h"
 #include "chrome/browser/ui/find_bar/find_bar_controller.h"
 #include "chrome/browser/ui/view_ids.h"
 #include "chrome/browser/ui/views/bookmarks/bookmark_bar_view.h"
@@ skipping 419 matching lines @@
   if (contents_split_->child_at(1) && contents_split_->child_at(1)->visible())
     return 0;
 
   // Adjust for separator.
   return active_bookmark_bar_->height() -
       views::NonClientFrameView::kClientEdgeThickness;
 }
 
 int BrowserViewLayout::LayoutDownloadShelf(int bottom) {
 #if !defined(OS_CHROMEOS) || defined(USE_AURA)
-  // Re-layout the shelf either if it is visible or if it's close animation
+  // Re-layout the shelf either if it is visible or if its close animation
   // is currently running.  ChromiumOS uses ActiveDownloadsUI instead of
   // DownloadShelf.
   if (browser_view_->IsDownloadShelfVisible() ||
       (download_shelf_ && download_shelf_->IsClosing())) {
     bool visible = browser()->SupportsWindowFeature(
         Browser::FEATURE_DOWNLOADSHELF);
     DCHECK(download_shelf_);
     int height = visible ? download_shelf_->GetPreferredSize().height() : 0;
     download_shelf_->SetVisible(visible);
     download_shelf_->SetBounds(vertical_layout_rect_.x(), bottom - height,
                                vertical_layout_rect_.width(), height);
     download_shelf_->Layout();
     bottom -= height;
   }
 #endif
   return bottom;
 }
 
 bool BrowserViewLayout::InfobarVisible() const {
   // NOTE: Can't check if the size IsEmpty() since it's always 0-width.
   return browser()->SupportsWindowFeature(Browser::FEATURE_INFOBAR) &&
       (infobar_container_->GetPreferredSize().height() != 0);
 }