Fix missing backing store in Linux.

chrome/browser/tab_contents/web_contents_view.h

 // Copyright (c) 2006-2008 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.
 
 #ifndef CHROME_BROWSER_TAB_CONTENTS_WEB_CONTENTS_VIEW_H_
 #define CHROME_BROWSER_TAB_CONTENTS_WEB_CONTENTS_VIEW_H_
 
 #include <map>
 #include <string>
 
@@ skipping 17 matching lines @@
 
 // The WebContentsView is an interface that is implemented by the platform-
 // dependent web contents views. The WebContents uses this interface to talk to
 // them. View-related messages will also get forwarded directly to this class
 // from RenderViewHost via RenderViewHostDelegate::View.
 //
 // It contains a small amount of logic with respect to creating new sub-view
 // that should be the same for all platforms.
 class WebContentsView : public RenderViewHostDelegate::View {
  public:
-  WebContentsView(WebContents* web_contents);
+  explicit WebContentsView(WebContents* web_contents);
   virtual ~WebContentsView() {}
 
   // Creates the appropriate type of WebContentsView for the current system.
   // The return value is a new heap allocated view with ownership passing to
   // the caller.
   static WebContentsView* Create(WebContents* web_contents);
 
   WebContents* web_contents() const { return web_contents_; }
 
   virtual void CreateView() = 0;
@@ skipping 65 matching lines @@
   // first time.
   virtual void SetInitialFocus() = 0;
 
   // Stores the currently focused view.
   virtual void StoreFocus() = 0;
 
   // Restores focus to the last focus view. If StoreFocus has not yet been
   // invoked, SetInitialFocus is invoked.
   virtual void RestoreFocus() = 0;
 
+  // Sets children's size.  May involve packing them in order to get the
+  // toolkit to send them resize events.
+  virtual void SetChildSize(RenderWidgetHostView* rwh_view) = 0;
+
  protected:
   WebContentsView() {}  // Abstract interface.
 
   // Internal functions used to support the CreateNewWidget() method. If a
   // platform requires plugging into widget creation at a lower level then a
   // subclass might want to override these functions, but otherwise they should
   // be fine just implementing RenderWidgetHostView::InitAsPopup().
   //
   // The Create function returns the newly created widget so it can be
   // associated with the given route. When the widget needs to be shown later,
@@ skipping 30 matching lines @@
 
   // These maps hold on to the widgets that we created on behalf of the
   // renderer that haven't shown yet.
   typedef std::map<int, RenderWidgetHostView*> PendingWidgetViews;
   PendingWidgetViews pending_widget_views_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsView);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_WEB_CONTENTS_VIEW_H_