Cleanup unreachable cert adding code

android_webview/browser/aw_content_browser_client.h

Index: android_webview/browser/aw_content_browser_client.h
diff --git a/android_webview/browser/aw_content_browser_client.h b/android_webview/browser/aw_content_browser_client.h
index 2cea37a28434ea2ba347b01844ae6135ceca8278..91df4bc191ef3615338a1c7ff585f2e0da88b9b7 100644
--- a/android_webview/browser/aw_content_browser_client.h
+++ b/android_webview/browser/aw_content_browser_client.h
@@ -34,12 +34,6 @@ class AwContentBrowserClient : public content::ContentBrowserClient {
   // moment during startup. AwContentBrowserClient owns the result.
   AwBrowserContext* InitBrowserContext();
 
-  // Overriden methods from ContentBrowserClient.
-  void AddCertificate(net::CertificateMimeType cert_type,
-                      const void* cert_data,
-                      size_t cert_size,
-                      int render_process_id,
-                      int render_frame_id) override;
   content::BrowserMainParts* CreateBrowserMainParts(
       const content::MainFunctionParams& parameters) override;
   content::WebContentsViewDelegate* GetWebContentsViewDelegate(