Content side of languagechange event fired on accept languages changes.

content/shell/renderer/test_runner/web_test_proxy.h

Index: content/shell/renderer/test_runner/web_test_proxy.h
diff --git a/content/shell/renderer/test_runner/web_test_proxy.h b/content/shell/renderer/test_runner/web_test_proxy.h
index 72f59d18ab1553eb5e7fb2d38894e45600ac42ff..d62b4a787bac896a4bda3f9f9304cdf0c5cb69f3 100644
--- a/content/shell/renderer/test_runner/web_test_proxy.h
+++ b/content/shell/renderer/test_runner/web_test_proxy.h
@@ -129,6 +129,8 @@ class WebTestProxyBase : public blink::WebCompositeAndReadbackAsyncCallback {
   // WebCompositeAndReadbackAsyncCallback implementation.
   virtual void didCompositeAndReadback(const SkBitmap& bitmap);
 
+  void SetAcceptLanguages(const std::string& accept_languages);
+
  protected:
   WebTestProxyBase();
   ~WebTestProxyBase();
@@ -206,6 +208,8 @@ class WebTestProxyBase : public blink::WebCompositeAndReadbackAsyncCallback {
                                         blink::WebDOMMessageEvent);
   void ResetInputMethod();
 
+  blink::WebString acceptLanguages();
+
  private:
   template <class, typename, typename>
   friend class WebFrameTestProxy;
@@ -236,6 +240,8 @@ class WebTestProxyBase : public blink::WebCompositeAndReadbackAsyncCallback {
   scoped_ptr<blink::WebMIDIClientMock> m_midiClient;
   scoped_ptr<MockWebSpeechRecognizer> m_speechRecognizer;
 
+  std::string accept_languages_;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(WebTestProxyBase);
 };
@@ -338,6 +344,9 @@ class WebTestProxy : public Base, public WebTestProxyBase {
   virtual void postSpellCheckEvent(const blink::WebString& eventName) {
     WebTestProxyBase::PostSpellCheckEvent(eventName);
   }
+  virtual blink::WebString acceptLanguages() {
+    return WebTestProxy::acceptLanguages();
+  }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WebTestProxy);