Rename extension_manifest_keys namespace to extensions::manifest_keys.

chrome/browser/extensions/api/messaging/message_service.cc

Index: chrome/browser/extensions/api/messaging/message_service.cc
diff --git a/chrome/browser/extensions/api/messaging/message_service.cc b/chrome/browser/extensions/api/messaging/message_service.cc
index 00e40f7eb03c132604c0b46838e07430c6b5d75d..be6d2feeeec6a79f841f456fded498d0e85d680f 100644
--- a/chrome/browser/extensions/api/messaging/message_service.cc
+++ b/chrome/browser/extensions/api/messaging/message_service.cc
@@ -26,7 +26,6 @@
 #include "chrome/browser/tab_contents/tab_util.h"
 #include "chrome/common/extensions/background_info.h"
 #include "chrome/common/extensions/extension.h"
-#include "chrome/common/extensions/extension_manifest_constants.h"
 #include "chrome/common/extensions/extension_messages.h"
 #include "chrome/common/extensions/incognito_handler.h"
 #include "chrome/common/extensions/manifest_handlers/externally_connectable.h"
@@ -38,6 +37,7 @@
 #include "content/public/browser/render_widget_host_view.h"
 #include "content/public/browser/site_instance.h"
 #include "content/public/browser/web_contents.h"
+#include "extensions/common/manifest_constants.h"
 #include "url/gurl.h"
 
 using content::SiteInstance;
@@ -113,7 +113,7 @@ static base::StaticAtomicSequenceNumber g_channel_id_overflow_count;
 static content::RenderProcessHost* GetExtensionProcess(
     Profile* profile, const std::string& extension_id) {
   SiteInstance* site_instance =
-      extensions::ExtensionSystem::Get(profile)->process_manager()->
+      ExtensionSystem::Get(profile)->process_manager()->
           GetSiteInstanceForURL(
               Extension::GetBaseURLFromExtensionId(extension_id));
 
@@ -206,7 +206,7 @@ void MessageService::OpenChannelToExtension(
   }
 
   ExtensionService* extension_service =
-      extensions::ExtensionSystem::Get(profile)->extension_service();
+      ExtensionSystem::Get(profile)->extension_service();
 
   if (profile->IsOffTheRecord() &&
       !extension_service->IsIncognitoEnabled(target_extension_id)) {
@@ -222,7 +222,7 @@ void MessageService::OpenChannelToExtension(
     ExternallyConnectableInfo* externally_connectable =
         static_cast<ExternallyConnectableInfo*>(
             target_extension->GetManifestData(
-                extension_manifest_keys::kExternallyConnectable));
+                manifest_keys::kExternallyConnectable));
     bool is_externally_connectable = false;
 
     if (externally_connectable) {
@@ -305,7 +305,7 @@ void MessageService::OpenChannelToNativeApp(
 #if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_LINUX)
   Profile* profile = Profile::FromBrowserContext(source->GetBrowserContext());
   ExtensionService* extension_service =
-      extensions::ExtensionSystem::Get(profile)->extension_service();
+      ExtensionSystem::Get(profile)->extension_service();
   bool has_permission = false;
   if (extension_service) {
     const Extension* extension =