[MediaRouter] Adds GetPresentationServiceDelegate impl to ChromeContentBrowserClient

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 51b6bd8bcbd8b1d9b466bdc6307ac9944379aa0c..f5fb1b4a5f0e1fd999f3ecca7f0fc243203acd10 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -240,6 +240,10 @@
 #include "chrome/browser/media/webrtc_logging_handler_host.h"
 #endif
 
+if defined(ENABLE_MEDIA_ROUTER)
+#include "chrome/browser/media/router/presentation_service_delegate_impl.h"
+#endif
+
 using base::FileDescriptor;
 using blink::WebWindowFeatures;
 using content::AccessTokenStore;
@@ -2362,6 +2366,20 @@ void ChromeContentBrowserClient::OpenURL(
 #endif
 }
 
+content::PresentationServiceDelegate*
+ChromeContentBrowserClient::GetPresentationServiceDelegate(
+      content::WebContents* web_contents) {
+#if defined(ENABLE_MEDIA_ROUTER)
+  if (switches::MediaRouterEnabled()) {
+    return media_router::PresentationServiceDelegateImpl::
+        GetOrCreateForWebContents(web_contents);
+  }
+  return nullptr;
+#else
+  return nullptr;
+#endif
+}
+
 void ChromeContentBrowserClient::RecordURLMetric(const std::string& metric,
                                                  const GURL& url) {
   if (url.is_valid()) {