Require WebLocalFrame to be created with a non-null client

content/renderer/render_frame_impl.h

 // Copyright 2013 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 CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 #define CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 452 matching lines @@
       blink::WebApplicationCacheHostClient* client) override;
   blink::WebWorkerContentSettingsClientProxy*
   createWorkerContentSettingsClientProxy() override;
   blink::WebExternalPopupMenu* createExternalPopupMenu(
       const blink::WebPopupMenuInfo& popup_menu_info,
       blink::WebExternalPopupMenuClient* popup_menu_client) override;
   blink::WebCookieJar* cookieJar() override;
   blink::BlameContext* frameBlameContext() override;
   blink::WebServiceWorkerProvider* createServiceWorkerProvider() override;
   void didAccessInitialDocument() override;
-  blink::WebFrame* createChildFrame(
+  blink::WebLocalFrame* createChildFrame(
       blink::WebLocalFrame* parent,
       blink::WebTreeScopeType scope,
       const blink::WebString& name,
       const blink::WebString& unique_name,
       blink::WebSandboxFlags sandbox_flags,
       const blink::WebFrameOwnerProperties& frame_owner_properties) override;
   void didChangeOpener(blink::WebFrame* frame) override;
   void frameDetached(blink::WebLocalFrame* frame, DetachType type) override;
   void frameFocused() override;
-  void willClose(blink::WebFrame* frame) override;
+  void willCommitProvisionalLoad(blink::WebLocalFrame* frame) override;
   void didChangeName(const blink::WebString& name,
                      const blink::WebString& unique_name) override;
   void didEnforceInsecureRequestPolicy(
       blink::WebInsecureRequestPolicy policy) override;
   void didUpdateToUniqueOrigin(
       bool is_potentially_trustworthy_unique_origin) override;
   void didChangeSandboxFlags(blink::WebFrame* child_frame,
                              blink::WebSandboxFlags flags) override;
   void didAddContentSecurityPolicy(
       const blink::WebString& header_value,
@@ skipping 807 matching lines @@
       remote_associated_interfaces_;
 
   base::WeakPtrFactory<RenderFrameImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_FRAME_IMPL_H_