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

chrome/renderer/extensions/document_custom_bindings.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/renderer/extensions/document_custom_bindings.h"
 
 #include <string>
 
 #include "base/bind.h"
+#include "chrome/common/extensions/extension.h"
 #include "chrome/renderer/extensions/chrome_v8_context.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebFrame.h"
 #include "v8/include/v8.h"
 
 namespace extensions {
 
 DocumentCustomBindings::DocumentCustomBindings(
     Dispatcher* dispatcher, ChromeV8Context* context)
     : ChromeV8Extension(dispatcher, context) {
   RouteFunction("RegisterElement",
       base::Bind(&DocumentCustomBindings::RegisterElement,
                  base::Unretained(this)));
+  RouteFunction("CompareURLs",
+      base::Bind(&DocumentCustomBindings::CompareURLs,
+                 base::Unretained(this)));
+}
+
+void DocumentCustomBindings::CompareURLs(
+    const v8::FunctionCallbackInfo<v8::Value>& args) {
+  if (args.Length() != 2 || !args[0]->IsString() || !args[1]->IsString()) {
+    NOTREACHED();
+    return;
+  }
+
+  GURL default_url(context()->extension()->url());
+
+  std::string url1_str(*v8::String::AsciiValue(args[0]));
+  std::string url2_str(*v8::String::AsciiValue(args[1]));
+
+  GURL resolved_url1(default_url.Resolve(url1_str));
+  GURL resolved_url2(default_url.Resolve(url2_str));
+
+  args.GetReturnValue().Set(v8::Boolean::New(resolved_url1 == resolved_url2));
 }
 
 // Attach an event name to an object.
 void DocumentCustomBindings::RegisterElement(
     const v8::FunctionCallbackInfo<v8::Value>& args) {
   if (args.Length() != 2 || !args[0]->IsString() || !args[1]->IsObject()) {
     NOTREACHED();
     return;
   }
 
   std::string element_name(*v8::String::AsciiValue(args[0]));
   v8::Local<v8::Object> options = args[1]->ToObject();
 
   WebKit::WebExceptionCode ec = 0;
   WebKit::WebDocument document = context()->web_frame()->document();
   v8::Handle<v8::Value> constructor =
       document.registerEmbedderCustomElement(
           WebKit::WebString::fromUTF8(element_name), options, ec);
   args.GetReturnValue().Set(constructor);
 }
 
 }  // namespace extensions