Add logging for missing resource.

mojo/services/html_viewer/blink_platform_impl.cc

 // Copyright 2014 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 "mojo/services/html_viewer/blink_platform_impl.h"
 
 #include <cmath>
 
 #include "base/rand_util.h"
 #include "base/stl_util.h"
@@ skipping 141 matching lines @@
 blink::WebData BlinkPlatformImpl::loadResource(const char* resource) {
   for (size_t i = 0; i < arraysize(kDataResources); ++i) {
     if (!strcmp(resource, kDataResources[i].name)) {
       int length;
       const char* data =
           blink_resource_map_.GetResource(kDataResources[i].id, &length);
       CHECK(data != nullptr && length > 0);
       return blink::WebData(data, length);
     }
   }
-  NOTREACHED() << "Requested resource is unavailable!";
+  NOTREACHED() << "Requested resource is unavailable: " << resource;
   return blink::WebData();
 }
 
 blink::WebURLLoader* BlinkPlatformImpl::createURLLoader() {
   return NULL;
 }
 
 blink::WebSocketHandle* BlinkPlatformImpl::createWebSocketHandle() {
   return NULL;
 }
@@ skipping 67 matching lines @@
 }
 
 // static
 void BlinkPlatformImpl::DestroyCurrentThread(void* thread) {
   WebThreadImplForMessageLoop* impl =
       static_cast<WebThreadImplForMessageLoop*>(thread);
   delete impl;
 }
 
 }  // namespace html_viewer