skiaserve: Add CORS header, and debugger code is served over HTTPS.

tools/skiaserve/skiaserve.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrCaps.h"
 #include "GrContextFactory.h"
 #include "SkCanvas.h"
@@ skipping 138 matching lines @@
     SkAutoTUnref<SkJSONCanvas> jsonCanvas(new SkJSONCanvas(kImageWidth, kImageHeight, stream));
     jsonCanvas->drawPicture(picture);
     jsonCanvas->finish();
 
     SkAutoTUnref<SkData> data(stream.copyToData());
     return SendData(connection, data, "application/json");
 }
 
 static int SendTemplate(MHD_Connection* connection, bool redirect = false,
                         const char* redirectUrl = nullptr) {
-    SkString debuggerTemplate = generateTemplate(SkString("http://debugger.skia.org"));
+    SkString debuggerTemplate = generateTemplate(SkString("https://debugger.skia.org"));
 
     MHD_Response* response = MHD_create_response_from_buffer(
         debuggerTemplate.size(),
         (void*) const_cast<char*>(debuggerTemplate.c_str()),
         MHD_RESPMEM_MUST_COPY);
+    MHD_add_response_header (response, "Access-Control-Allow-Origin", "*");
 
     int status = MHD_HTTP_OK;
 
     if (redirect) {
         MHD_add_response_header (response, "Location", redirectUrl);
         status = MHD_HTTP_SEE_OTHER;
     }
 
     int ret = MHD_queue_response(connection, status, response);
     MHD_destroy_response(response);
@@ skipping 123 matching lines @@
     MHD_stop_daemon(daemon);
     return 0;
 }
 
 #if !defined SK_BUILD_FOR_IOS
 int main(int argc, char** argv) {
     SkCommandLineFlags::Parse(argc, argv);
     return skiaserve_main();
 }
 #endif