GTTF: Convert WebContentsImplBrowserTest to use EmbeddedTestServer.

net/test/embedded_test_server/embedded_test_server.h

Index: net/test/embedded_test_server/embedded_test_server.h
diff --git a/net/test/embedded_test_server/embedded_test_server.h b/net/test/embedded_test_server/embedded_test_server.h
index 7f85374d8b7e1ebcb8b0ddaafd1d88a2882208b7..69662278b9923a8a74e29b64ebf802f3ca25bdce 100644
--- a/net/test/embedded_test_server/embedded_test_server.h
+++ b/net/test/embedded_test_server/embedded_test_server.h
@@ -17,6 +17,10 @@
 #include "googleurl/src/gurl.h"
 #include "net/socket/tcp_listen_socket.h"
 
+namespace base {
+class FilePath;
+}
+
 namespace net {
 namespace test_server {
 
@@ -107,6 +111,12 @@ class EmbeddedTestServer : public StreamListenSocket::Delegate {
   // Returns the port number used by the server.
   int port() const { return port_; }
 
+  // Registers request handler which serves files from |directory|.
+  // For instance, a request to "/foo.html" is served by "foo.html" under
+  // |directory|. Files under sub directories are also handled in the same way
+  // (i.e. "/foo/bar.html" is served by "foo/bar.html" under |directory|).
+  void ServeFilesFromDirectory(const base::FilePath& directory);
+
   // The most general purpose method. Any request processing can be added using
   // this method. Takes ownership of the object. The |callback| is called
   // on UI thread.