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..57d0e6e3c4bd804a90b7065a6eee39aade462ed0 100644
--- a/content/plugin/webplugin_proxy.cc
+++ b/content/plugin/webplugin_proxy.cc
@@ -20,6 +20,7 @@
 #include "content/plugin/plugin_thread.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/url_constants.h"
+#include "net/base/url_constants.h"
 #include "skia/ext/platform_canvas.h"
 #include "skia/ext/platform_device.h"
 #include "third_party/WebKit/public/web/WebBindings.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(net::kHttpScheme) &&
+          !request_url.SchemeIs(net::kHttpsScheme) &&
           !request_url.SchemeIs(kFtpScheme)) {
         return;
       }