Extract chrome.runtime API code from extensions::EventRouter

chrome/browser/extensions/chrome_extensions_browser_client.cc

Index: chrome/browser/extensions/chrome_extensions_browser_client.cc
diff --git a/chrome/browser/extensions/chrome_extensions_browser_client.cc b/chrome/browser/extensions/chrome_extensions_browser_client.cc
index 2aa413fedf22159de893bcf717636e8c7e9394e3..cdcccfb884c6df3fc820932bf593b30e8fb53775 100644
--- a/chrome/browser/extensions/chrome_extensions_browser_client.cc
+++ b/chrome/browser/extensions/chrome_extensions_browser_client.cc
@@ -81,8 +81,11 @@ bool ChromeExtensionsBrowserClient::DeferLoadingBackgroundHosts(
 }
 
 bool ChromeExtensionsBrowserClient::DidVersionUpdate(
-    ExtensionPrefs* extension_prefs) {
+    content::BrowserContext* context) {
+  Profile* profile = static_cast<Profile*>(context);
+
   // Unit tests may not provide prefs; assume everything is up-to-date.
+  ExtensionPrefs* extension_prefs = ExtensionPrefs::Get(profile);
   if (!extension_prefs)
     return false;