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

ui/views/controls/webview/webview.h

Index: ui/views/controls/webview/webview.h
diff --git a/ui/views/controls/webview/webview.h b/ui/views/controls/webview/webview.h
index e38f6eed50d4994c5fe3268597c738ba201ce2cf..e860d85473931aaa0053787160e92d4433f5560b 100644
--- a/ui/views/controls/webview/webview.h
+++ b/ui/views/controls/webview/webview.h
@@ -5,20 +5,22 @@
 #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[];
 
@@ -112,7 +114,6 @@ class VIEWS_EXPORT WebView : public View,
       content::BrowserContext* browser_context,
       content::SiteInstance* site_instance);
 
-
   NativeViewHost* wcv_holder_;
   scoped_ptr<content::WebContents> wc_owner_;
   content::WebContents* web_contents_;