<webview>: Resolve relative paths as chrome-extension: URLs

chrome/browser/guestview/webview/webview_guest.cc

Index: chrome/browser/guestview/webview/webview_guest.cc
diff --git a/chrome/browser/guestview/webview/webview_guest.cc b/chrome/browser/guestview/webview/webview_guest.cc
index 1cbd70491b90ee57fb98a3658417c9d7b799c0ed..dda57295143527b1db15357d54ccc40dc66de1cb 100644
--- a/chrome/browser/guestview/webview/webview_guest.cc
+++ b/chrome/browser/guestview/webview/webview_guest.cc
@@ -5,6 +5,7 @@
 #include "chrome/browser/guestview/webview/webview_guest.h"
 
 #include "base/command_line.h"
+#include "base/strings/stringprintf.h"
 #include "chrome/browser/extensions/api/web_request/web_request_api.h"
 #include "chrome/browser/extensions/extension_renderer_state.h"
 #include "chrome/browser/extensions/extension_web_contents_observer.h"
@@ -27,6 +28,7 @@
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/result_codes.h"
+#include "extensions/common/constants.h"
 #include "net/base/net_errors.h"
 
 #if defined(ENABLE_PLUGINS)
@@ -558,6 +560,17 @@ void WebViewGuest::RemoveWebViewFromExtensionRendererState(
           web_contents->GetRoutingID()));
 }
 
+GURL WebViewGuest::ResolveURL(const std::string& src) {
+  if (extension_id().empty()) {
+    NOTREACHED();
+    return GURL(src);
+  }
+  GURL default_url(base::StringPrintf("%s://%s/",
+                                      extensions::kExtensionScheme,
+                                      extension_id().c_str()));
+  return default_url.Resolve(src);
+}
+
 void WebViewGuest::SizeChanged(const gfx::Size& old_size,
                                const gfx::Size& new_size) {
   scoped_ptr<DictionaryValue> args(new DictionaryValue());