Enable size_t to int truncation warnings in PPAPI

ppapi/tests/test_websocket.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/tests/test_websocket.h"
 
 #include <stdio.h>
 #include <string.h>
 
 #include <algorithm>
@@ skipping 241 matching lines @@
     char buffer[10];
     sprintf(buffer, ":%d", instance_->websocket_port());
     rv += std::string(buffer);
   }
   rv += "/";
   rv += url;
   return rv;
 }
 
 PP_Var TestWebSocket::CreateVarString(const std::string& string) {
-  return var_interface_->VarFromUtf8(string.c_str(), string.size());
+  return var_interface_->VarFromUtf8(string.c_str(),
+                                     static_cast<uint32_t>(string.size()));
 }
 
 PP_Var TestWebSocket::CreateVarBinary(const std::vector<uint8_t>& binary) {
-  PP_Var var = arraybuffer_interface_->Create(binary.size());
+  PP_Var var =
+      arraybuffer_interface_->Create(static_cast<uint32_t>(binary.size()));
   uint8_t* var_data = static_cast<uint8_t*>(arraybuffer_interface_->Map(var));
   std::copy(binary.begin(), binary.end(), var_data);
   return var;
 }
 
 void TestWebSocket::ReleaseVar(const PP_Var& var) {
   var_interface_->Release(var);
 }
 
 bool TestWebSocket::AreEqualWithString(const PP_Var& var,
@@ skipping 1330 matching lines @@
   size_t last_event = events_on_closed - 1;
   for (uint32_t i = 1; i < last_event; ++i) {
     ASSERT_EQ(WebSocketEvent::EVENT_MESSAGE, events[i].event_type);
     ASSERT_TRUE(AreEqualWithString(events[i].var.pp_var(), message));
   }
   ASSERT_EQ(WebSocketEvent::EVENT_CLOSE, events[last_event].event_type);
   ASSERT_TRUE(events[last_event].was_clean);
 
   PASS();
 }