Provide a safer URLLoader ReadResponseBody API

ppapi/thunk/ppb_url_loader_thunk.cc

 // Copyright (c) 2012 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 "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/shared_impl/tracked_callback.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/thunk.h"
 #include "ppapi/thunk/ppb_url_loader_api.h"
@@ skipping 72 matching lines @@
                          void* buffer,
                          int32_t bytes_to_read,
                          PP_CompletionCallback callback) {
   EnterURLLoader enter(loader, callback, true);
   if (enter.failed())
     return enter.retval();
   return enter.SetResult(enter.object()->ReadResponseBody(buffer, bytes_to_read,
                                                           enter.callback()));
 }
 
+int32_t ReadResponseBodyToArray(PP_Resource loader,
+                                int32_t max_read_length,
+                                PP_ArrayOutput* buffer,
+                                PP_CompletionCallback callback) {
+  EnterURLLoader enter(loader, callback, true);
+  if (enter.failed())
+    return enter.retval();
+  return enter.SetResult(enter.object()->ReadResponseBodyToArray(
+      max_read_length, buffer, enter.callback()));
+}
+
 int32_t FinishStreamingToFile(PP_Resource loader,
                               PP_CompletionCallback callback) {
   EnterURLLoader enter(loader, callback, true);
   if (enter.failed())
     return enter.retval();
   return enter.SetResult(
       enter.object()->FinishStreamingToFile(enter.callback()));
 }
 
 void Close(PP_Resource loader) {
   EnterURLLoader enter(loader, true);
   if (enter.succeeded())
     enter.object()->Close();
 }
 
 void GrantUniversalAccess(PP_Resource loader) {
   EnterURLLoader enter(loader, true);
   if (enter.succeeded())
     enter.object()->GrantUniversalAccess();
 }
 
 void SetStatusCallback(PP_Resource loader,
                        PP_URLLoaderTrusted_StatusCallback cb) {
   EnterURLLoader enter(loader, true);
   if (enter.succeeded())
     enter.object()->SetStatusCallback(cb);
 }
 
-const PPB_URLLoader g_ppb_urlloader_thunk = {
+const PPB_URLLoader_1_1 g_ppb_urlloader_thunk = {
   &Create,
   &IsURLLoader,
   &Open,
+  &FollowRedirect,
+  &GetUploadProgress,
+  &GetDownloadProgress,
+  &GetResponseInfo,
+  &ReadResponseBody,
+  &FinishStreamingToFile,
+  &Close,
+  &ReadResponseBodyToArray
+};
+
+const PPB_URLLoader_1_0 g_ppb_urlloader_thunk_1_0 = {
+  &Create,
+  &IsURLLoader,
+  &Open,
   &FollowRedirect,
   &GetUploadProgress,
   &GetDownloadProgress,
   &GetResponseInfo,
   &ReadResponseBody,
   &FinishStreamingToFile,
   &Close
 };
 
 const PPB_URLLoaderTrusted g_ppb_urlloader_trusted_thunk = {
   &GrantUniversalAccess,
   &SetStatusCallback
 };
 
 }  // namespace
 
+const PPB_URLLoader_1_1* GetPPB_URLLoader_1_1_Thunk() {
+  return &g_ppb_urlloader_thunk;
+}
+
 const PPB_URLLoader_1_0* GetPPB_URLLoader_1_0_Thunk() {
-  return &g_ppb_urlloader_thunk;
+  return &g_ppb_urlloader_thunk_1_0;
 }
 
 const PPB_URLLoaderTrusted_0_3* GetPPB_URLLoaderTrusted_0_3_Thunk() {
   return &g_ppb_urlloader_trusted_thunk;
 }
 
 }  // namespace thunk
 }  // namespace ppapi