Move some content url constants to /url.

content/plugin/webplugin_proxy.cc

Index: content/plugin/webplugin_proxy.cc
diff --git a/content/plugin/webplugin_proxy.cc b/content/plugin/webplugin_proxy.cc
index 73d527bae5196a432e9786de99ba20c8cc3ae6a3..f0b423c35af4a61f11dcfb5501efcd743220ffb4 100644
--- a/content/plugin/webplugin_proxy.cc
+++ b/content/plugin/webplugin_proxy.cc
@@ -25,6 +25,7 @@
 #include "third_party/WebKit/public/web/WebBindings.h"
 #include "ui/gfx/blit.h"
 #include "ui/gfx/canvas.h"
+#include "url/url_constants.h"
 
 #if defined(OS_MACOSX)
 #include "base/mac/mac_util.h"
@@ -288,8 +289,8 @@ void WebPluginProxy::HandleURLRequest(const char* url,
     if (delegate_->GetQuirks() &
         WebPluginDelegateImpl::PLUGIN_QUIRK_BLOCK_NONSTANDARD_GETURL_REQUESTS) {
       GURL request_url(url);
-      if (!request_url.SchemeIs(kHttpScheme) &&
-          !request_url.SchemeIs(kHttpsScheme) &&
+      if (!request_url.SchemeIs(url::kHttpScheme) &&
+          !request_url.SchemeIs(url::kHttpsScheme) &&
           !request_url.SchemeIs(kFtpScheme)) {
         return;
       }