Misc. small cleanups

webrtc/common_audio/lapped_transform_unittest.cc

Index: webrtc/common_audio/lapped_transform_unittest.cc
diff --git a/webrtc/common_audio/lapped_transform_unittest.cc b/webrtc/common_audio/lapped_transform_unittest.cc
index f688cc240a198d5d40b9e56f4cf5ed30001163f3..eb1c80f28101335b51e1d42459472b2fb5e72c8f 100644
--- a/webrtc/common_audio/lapped_transform_unittest.cc
+++ b/webrtc/common_audio/lapped_transform_unittest.cc
@@ -36,12 +36,12 @@ class NoopCallback : public webrtc::LappedTransform::Callback {
     ++block_num_;
   }
 
-  int block_num() {
+  size_t block_num() {
     return block_num_;
   }
 
  private:
-  int block_num_;
+  size_t block_num_;
 };
 
 class FftCheckerCallback : public webrtc::LappedTransform::Callback {
@@ -69,12 +69,12 @@ class FftCheckerCallback : public webrtc::LappedTransform::Callback {
     }
   }
 
-  int block_num() {
+  size_t block_num() {
     return block_num_;
   }
 
  private:
-  int block_num_;
+  size_t block_num_;
 };
 
 void SetFloatArray(float value, int rows, int cols, float* const* array) {
@@ -91,9 +91,9 @@ namespace webrtc {
 
 TEST(LappedTransformTest, Windowless) {
   const int kChannels = 3;
-  const int kChunkLength = 512;
-  const int kBlockLength = 64;
-  const int kShiftAmount = 64;
+  const size_t kChunkLength = 512;
+  const size_t kBlockLength = 64;
+  const size_t kShiftAmount = 64;
   NoopCallback noop;
 
   // Rectangular window.
@@ -119,7 +119,7 @@ TEST(LappedTransformTest, Windowless) {
   trans.ProcessChunk(in_chunk, out_chunk);
 
   for (int i = 0; i < kChannels; ++i) {
-    for (int j = 0; j < kChunkLength; ++j) {
+    for (size_t j = 0; j < kChunkLength; ++j) {
       ASSERT_NEAR(out_chunk[i][j], 2.0f, 1e-5f);
     }
   }
@@ -128,9 +128,9 @@ TEST(LappedTransformTest, Windowless) {
 }
 
 TEST(LappedTransformTest, IdentityProcessor) {
-  const int kChunkLength = 512;
-  const int kBlockLength = 64;
-  const int kShiftAmount = 32;
+  const size_t kChunkLength = 512;
+  const size_t kBlockLength = 64;
+  const size_t kShiftAmount = 32;
   NoopCallback noop;
 
   // Identity window for |overlap = block_size / 2|.
@@ -149,7 +149,7 @@ TEST(LappedTransformTest, IdentityProcessor) {
 
   trans.ProcessChunk(&in_chunk, &out_chunk);
 
-  for (int i = 0; i < kChunkLength; ++i) {
+  for (size_t i = 0; i < kChunkLength; ++i) {
     ASSERT_NEAR(out_chunk[i],
                 (i < kBlockLength - kShiftAmount) ? 0.0f : 2.0f,
                 1e-5f);
@@ -159,8 +159,8 @@ TEST(LappedTransformTest, IdentityProcessor) {
 }
 
 TEST(LappedTransformTest, Callbacks) {
-  const int kChunkLength = 512;
-  const int kBlockLength = 64;
+  const size_t kChunkLength = 512;
+  const size_t kBlockLength = 64;
   FftCheckerCallback call;
 
   // Rectangular window.
@@ -183,7 +183,7 @@ TEST(LappedTransformTest, Callbacks) {
 }
 
 TEST(LappedTransformTest, chunk_length) {
-  const int kBlockLength = 64;
+  const size_t kBlockLength = 64;
   FftCheckerCallback call;
   const float window[kBlockLength] = {};