Moved constants out of web_view.js and into a new file, web_view_constants.js, so that the constant…

extensions/renderer/dispatcher.cc

Index: extensions/renderer/dispatcher.cc
diff --git a/extensions/renderer/dispatcher.cc b/extensions/renderer/dispatcher.cc
index 5b4f93223496afc9ba10d5adee1e25f014cbb94e..0cb5bb418dff81a78a50957b1de4b8f331266239 100644
--- a/extensions/renderer/dispatcher.cc
+++ b/extensions/renderer/dispatcher.cc
@@ -334,6 +334,7 @@ void Dispatcher::DidCreateScriptContext(
   // The API will be automatically set up when first used.
   if (context->GetAvailability("webViewInternal").is_available()) {
     module_system->Require("webView");
+    module_system->Require("webViewConstants");
     if (context->GetAvailability("webViewExperimentalInternal")
             .is_available()) {
       module_system->Require("webViewExperimental");
@@ -548,6 +549,8 @@ std::vector<std::pair<std::string, int> > Dispatcher::GetJsResources() {
   // Note: webView not webview so that this doesn't interfere with the
   // chrome.webview API bindings.
   resources.push_back(std::make_pair("webView", IDR_WEB_VIEW_JS));
+  resources.push_back(std::make_pair("webViewConstants",
+                                     IDR_WEB_VIEW_CONSTANTS_JS));
   resources.push_back(std::make_pair("webViewEvents", IDR_WEB_VIEW_EVENTS_JS));
   resources.push_back(
       std::make_pair("webViewExperimental", IDR_WEB_VIEW_EXPERIMENTAL_JS));