Enable size_t to int truncation warnings in PPAPI

ppapi/tests/test_post_message.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_post_message.h"
 
 #include <string.h>
 #include <algorithm>
 #include <map>
 #include <sstream>
@@ skipping 276 matching lines @@
 
 int TestPostMessage::WaitForMessages() {
   size_t message_size_before = message_data_.size();
   // We first post a FINISHED_WAITING_MESSAGE. This should be guaranteed to
   // come back _after_ any other incoming messages that were already pending.
   instance_->PostMessage(pp::Var(FINISHED_WAITING_MESSAGE));
   testing_interface_->RunMessageLoop(instance_->pp_instance());
   // Now that the FINISHED_WAITING_MESSAGE has been echoed back to us, we know
   // that all pending messages have been slurped up. Return the number we
   // received (which may be zero).
-  return message_data_.size() - message_size_before;
+  return static_cast<int>(message_data_.size() - message_size_before);
 }
 
 std::string TestPostMessage::CheckMessageProperties(
     const pp::Var& test_data,
     const std::vector<std::string>& properties_to_check) {
   typedef std::vector<std::string>::const_iterator Iterator;
   for (Iterator iter = properties_to_check.begin();
        iter != properties_to_check.end();
        ++iter) {
     ASSERT_TRUE(AddEchoingListener(*iter));
@@ skipping 279 matching lines @@
 std::string TestPostMessage::TestSendingResource() {
   // Clean up after previous tests. This also swallows the message sent by Init
   // if we didn't run the 'SendInInit' test. All tests other than 'SendInInit'
   // should start with these.
   WaitForMessages();
   message_data_.clear();
   ASSERT_TRUE(ClearListeners());
 
   std::string file_path("/");
   file_path += kTestFilename;
-  int content_length = strlen(kTestString);
+  int content_length = static_cast<int>(strlen(kTestString));
 
   // Create a file in the HTML5 temporary file system, in the Pepper plugin.
   TestCompletionCallback callback(instance_->pp_instance(), callback_type());
   pp::FileSystem file_system(instance_, PP_FILESYSTEMTYPE_LOCALTEMPORARY);
   callback.WaitForResult(file_system.Open(1024, callback.GetCallback()));
   CHECK_CALLBACK_BEHAVIOR(callback);
   ASSERT_EQ(PP_OK, callback.result());
   pp::FileRef write_file_ref(file_system, file_path.c_str());
   // Write to the file.
   pp::FileIO write_file_io(instance_);
@@ skipping 301 matching lines @@
     ASSERT_TRUE(received_value <= kThreadsToRun);
     ++received_counts[received_value];
   }
   ASSERT_EQ(expected_counts, received_counts);
 
   message_data_.clear();
   ASSERT_TRUE(ClearListeners());
 
   PASS();
 }