Relanding "views: Add a gyp file to build webview.". Try 2.

ui/views/controls/webview/webview.h

 // 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.
 
 #ifndef UI_VIEWS_CONTROLS_WEBVIEW_WEBVIEW_H_
 #define UI_VIEWS_CONTROLS_WEBVIEW_WEBVIEW_H_
 
+#include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_delegate.h"
+#include "ui/views/controls/webview/webview_export.h"
 #include "ui/views/view.h"
 
 namespace views {
 
 class NativeViewHost;
 
-class VIEWS_EXPORT WebView : public View,
-                             public content::NotificationObserver,
-                             public content::WebContentsDelegate {
+class WEBVIEW_EXPORT WebView : public View,
+                               public content::NotificationObserver,
+                               public content::WebContentsDelegate {
  public:
   static const char kViewClassName[];
 
   explicit WebView(content::BrowserContext* browser_context);
   virtual ~WebView();
 
   // This creates a WebContents if none is yet associated with this WebView. The
   // WebView owns this implicitly created WebContents.
   content::WebContents* GetWebContents();
 
@@ skipping 73 matching lines @@
   void RenderViewHostChanged(content::RenderViewHost* old_host,
                              content::RenderViewHost* new_host);
   void WebContentsDestroyed(content::WebContents* web_contents);
 
   // Create a regular or test web contents (based on whether we're running
   // in a unit test or not).
   content::WebContents* CreateWebContents(
       content::BrowserContext* browser_context,
       content::SiteInstance* site_instance);
 
-
   NativeViewHost* wcv_holder_;
   scoped_ptr<content::WebContents> wc_owner_;
   content::WebContents* web_contents_;
   content::BrowserContext* browser_context_;
   content::NotificationRegistrar registrar_;
   bool allow_accelerators_;
   gfx::Size preferred_size_;
 
   DISALLOW_COPY_AND_ASSIGN(WebView);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_WEBVIEW_WEBVIEW_H_