Fixing warning C4267 on Win (more_configs).

This is a follow-up of https://webrtc-review.googlesource.com/c/src/+/12921.

Bug: chromium:759980
Change-Id: Ifd39adb6541c0c7e0337f587a8b34b84a07331ed
Reviewed-on: https://webrtc-review.googlesource.com/13122
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20341}
diff --git a/modules/audio_coding/neteq/audio_multi_vector_unittest.cc b/modules/audio_coding/neteq/audio_multi_vector_unittest.cc
index 051b8ee..1489e80 100644
--- a/modules/audio_coding/neteq/audio_multi_vector_unittest.cc
+++ b/modules/audio_coding/neteq/audio_multi_vector_unittest.cc
@@ -9,6 +9,7 @@
  */
 
 #include "modules/audio_coding/neteq/audio_multi_vector.h"
+#include "rtc_base/safe_conversions.h"
 
 #include <assert.h>
 #include <stdlib.h>
@@ -51,7 +52,7 @@
     // And so on.
     for (size_t i = 0; i < array_length(); ++i) {
       for (size_t j = 1; j <= num_channels_; ++j) {
-        *ptr = j * 100 + i;
+        *ptr = rtc::checked_cast<int16_t>(j * 100 + i);
         ++ptr;
       }
     }
diff --git a/modules/audio_coding/neteq/audio_vector_unittest.cc b/modules/audio_coding/neteq/audio_vector_unittest.cc
index e027ee8..1ff8b85 100644
--- a/modules/audio_coding/neteq/audio_vector_unittest.cc
+++ b/modules/audio_coding/neteq/audio_vector_unittest.cc
@@ -9,6 +9,7 @@
  */
 
 #include "modules/audio_coding/neteq/audio_vector.h"
+#include "rtc_base/safe_conversions.h"
 
 #include <assert.h>
 #include <stdlib.h>
@@ -25,7 +26,7 @@
   virtual void SetUp() {
     // Populate test array.
     for (size_t i = 0; i < array_length(); ++i) {
-      array_[i] = i;
+      array_[i] = rtc::checked_cast<int16_t>(i);
     }
   }
 
@@ -253,7 +254,7 @@
   for (int i = 0; i < kNewLength; ++i) {
     new_array[i] = 100 + i;
   }
-  int insert_position = array_length();
+  int insert_position = rtc::checked_cast<int>(array_length());
   vec.InsertAt(new_array, kNewLength, insert_position);
   // Verify that the vector looks as follows:
   // {0, 1, ..., kLength - 1, 100, 101, ..., 100 + kNewLength - 1 }.
@@ -282,7 +283,8 @@
   for (int i = 0; i < kNewLength; ++i) {
     new_array[i] = 100 + i;
   }
-  int insert_position = array_length() + 10;  // Too large.
+  int insert_position = rtc::checked_cast<int>(
+      array_length() + 10); // Too large.
   vec.InsertAt(new_array, kNewLength, insert_position);
   // Verify that the vector looks as follows:
   // {0, 1, ..., kLength - 1, 100, 101, ..., 100 + kNewLength - 1 }.
@@ -338,7 +340,7 @@
   for (int i = 0; i < kNewLength; ++i) {
     new_array[i] = 100 + i;
   }
-  int insert_position = array_length() - 2;
+  int insert_position = rtc::checked_cast<int>(array_length() - 2);
   vec.OverwriteAt(new_array, kNewLength, insert_position);
   ASSERT_EQ(array_length() - 2u + kNewLength, vec.Size());
   // Verify that the vector looks as follows:
diff --git a/modules/audio_coding/neteq/expand_unittest.cc b/modules/audio_coding/neteq/expand_unittest.cc
index b52d626..aeaa07b 100644
--- a/modules/audio_coding/neteq/expand_unittest.cc
+++ b/modules/audio_coding/neteq/expand_unittest.cc
@@ -88,8 +88,8 @@
   void SetUp() override {
     // Fast-forward the input file until there is speech (about 1.1 second into
     // the file).
-    const size_t speech_start_samples =
-        static_cast<size_t>(test_sample_rate_hz_ * 1.1f);
+    const int speech_start_samples =
+        static_cast<int>(test_sample_rate_hz_ * 1.1f);
     ASSERT_TRUE(input_file_.Seek(speech_start_samples));
 
     // Pre-load the sync buffer with speech data.
diff --git a/modules/audio_coding/neteq/neteq_impl_unittest.cc b/modules/audio_coding/neteq/neteq_impl_unittest.cc
index a6e48c7..45d7f26 100644
--- a/modules/audio_coding/neteq/neteq_impl_unittest.cc
+++ b/modules/audio_coding/neteq/neteq_impl_unittest.cc
@@ -483,7 +483,7 @@
         decoded[i] = next_value_++;
       }
       *speech_type = kSpeech;
-      return encoded_len;
+      return rtc::checked_cast<int>(encoded_len);
     }
 
     void Reset() override { next_value_ = 1; }
@@ -1312,7 +1312,7 @@
       decoded[i] = next_value_++;
     }
     *speech_type = speech_type_;
-    return decoded_len;
+    return rtc::checked_cast<int>(decoded_len);
   }
 
   void Reset() override { next_value_ = 1; }
diff --git a/modules/audio_coding/neteq/red_payload_splitter_unittest.cc b/modules/audio_coding/neteq/red_payload_splitter_unittest.cc
index 7d97210..153a18e 100644
--- a/modules/audio_coding/neteq/red_payload_splitter_unittest.cc
+++ b/modules/audio_coding/neteq/red_payload_splitter_unittest.cc
@@ -20,6 +20,7 @@
 #include "api/audio_codecs/builtin_audio_decoder_factory.h"
 #include "modules/audio_coding/neteq/mock/mock_decoder_database.h"
 #include "modules/audio_coding/neteq/packet.h"
+#include "rtc_base/safe_conversions.h"
 #include "test/gtest.h"
 #include "test/mock_audio_decoder_factory.h"
 
@@ -99,7 +100,8 @@
     // Not the last block; set F = 1.
     *payload_ptr |= 0x80;
     ++payload_ptr;
-    int this_offset = (num_payloads - i - 1) * timestamp_offset;
+    int this_offset = rtc::checked_cast<int>(
+        (num_payloads - i - 1) * timestamp_offset);
     *payload_ptr = this_offset >> 6;
     ++payload_ptr;
     assert(kPayloadLength <= 1023);  // Max length described by 10 bits.
diff --git a/modules/audio_coding/neteq/sync_buffer_unittest.cc b/modules/audio_coding/neteq/sync_buffer_unittest.cc
index f3f7895..ad04942 100644
--- a/modules/audio_coding/neteq/sync_buffer_unittest.cc
+++ b/modules/audio_coding/neteq/sync_buffer_unittest.cc
@@ -9,6 +9,7 @@
  */
 
 #include "modules/audio_coding/neteq/sync_buffer.h"
+#include "rtc_base/safe_conversions.h"
 
 #include "test/gtest.h"
 
@@ -57,7 +58,7 @@
   // Populate |new_data|.
   for (size_t channel = 0; channel < kChannels; ++channel) {
     for (size_t i = 0; i < kNewLen; ++i) {
-      new_data[channel][i] = i;
+      new_data[channel][i] = rtc::checked_cast<int16_t>(i);
     }
   }
   // Push back |new_data| into |sync_buffer|. This operation should pop out
@@ -97,7 +98,7 @@
   // Populate |new_data|.
   for (size_t channel = 0; channel < kChannels; ++channel) {
     for (size_t i = 0; i < kNewLen; ++i) {
-      new_data[channel][i] = 1000 + i;
+      new_data[channel][i] = rtc::checked_cast<int16_t>(1000 + i);
     }
   }
   sync_buffer.PushBack(new_data);
@@ -130,7 +131,7 @@
   // Populate |new_data|.
   for (size_t channel = 0; channel < kChannels; ++channel) {
     for (size_t i = 0; i < kNewLen; ++i) {
-      new_data[channel][i] = i;
+      new_data[channel][i] = rtc::checked_cast<int16_t>(i);
     }
   }
   // Push back |new_data| into |sync_buffer|. This operation should pop out
diff --git a/modules/audio_coding/neteq/tools/input_audio_file_unittest.cc b/modules/audio_coding/neteq/tools/input_audio_file_unittest.cc
index e0ee265..32bccea 100644
--- a/modules/audio_coding/neteq/tools/input_audio_file_unittest.cc
+++ b/modules/audio_coding/neteq/tools/input_audio_file_unittest.cc
@@ -11,6 +11,7 @@
 // Unit tests for test InputAudioFile class.
 
 #include "modules/audio_coding/neteq/tools/input_audio_file.h"
+#include "rtc_base/safe_conversions.h"
 
 #include "test/gtest.h"
 
@@ -22,7 +23,7 @@
   static const size_t kChannels = 2;
   int16_t input[kSamples];
   for (size_t i = 0; i < kSamples; ++i) {
-    input[i] = i;
+    input[i] = rtc::checked_cast<int16_t>(i);
   }
   int16_t output[kSamples * kChannels];
   InputAudioFile::DuplicateInterleaved(input, kSamples, kChannels, output);
@@ -41,7 +42,7 @@
   static const size_t kChannels = 5;
   int16_t input[kSamples * kChannels];
   for (size_t i = 0; i < kSamples; ++i) {
-    input[i] = i;
+    input[i] = rtc::checked_cast<int16_t>(i);
   }
   InputAudioFile::DuplicateInterleaved(input, kSamples, kChannels, input);