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

chrome/renderer/extensions/document_custom_bindings.cc

Index: chrome/renderer/extensions/document_custom_bindings.cc
diff --git a/chrome/renderer/extensions/document_custom_bindings.cc b/chrome/renderer/extensions/document_custom_bindings.cc
index 253b6127f358417c2c39f01c661e53930a12d813..6342d31f1ae78c22211181820e82e66fbaa8f867 100644
--- a/chrome/renderer/extensions/document_custom_bindings.cc
+++ b/chrome/renderer/extensions/document_custom_bindings.cc
@@ -7,6 +7,7 @@
 #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"
@@ -20,6 +21,27 @@ DocumentCustomBindings::DocumentCustomBindings(
   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.