Coalesce event router Init calls into their constructors.

chrome/browser/extensions/browser_event_router.cc

Index: chrome/browser/extensions/browser_event_router.cc
diff --git a/chrome/browser/extensions/browser_event_router.cc b/chrome/browser/extensions/browser_event_router.cc
index a47d6fbb1f097e4e3d3a460ed7ff38a40aaa6ba5..b72899252e7616c772a7a7ee8ecf31f4eba5c84a 100644
--- a/chrome/browser/extensions/browser_event_router.cc
+++ b/chrome/browser/extensions/browser_event_router.cc
@@ -74,9 +74,10 @@ DictionaryValue* BrowserEventRouter::TabEntry::DidNavigate(
   return changed_properties;
 }
 
-void BrowserEventRouter::Init() {
-  if (initialized_)
-    return;
+BrowserEventRouter::BrowserEventRouter(Profile* profile)
+    : profile_(profile) {
+  DCHECK(!profile->IsOffTheRecord());
+
   BrowserList::AddObserver(this);
 
   // Init() can happen after the browser is running, so catch up with any
@@ -95,14 +96,6 @@ void BrowserEventRouter::Init() {
       }
     }
   }
-
-  initialized_ = true;
-}
-
-BrowserEventRouter::BrowserEventRouter(Profile* profile)
-    : initialized_(false),
-      profile_(profile) {
-  DCHECK(!profile->IsOffTheRecord());
 }
 
 BrowserEventRouter::~BrowserEventRouter() {