[NOT FOR REVIEW] Convert channel counts to size_t.

webrtc/common_audio/blocker.cc

Index: webrtc/common_audio/blocker.cc
diff --git a/webrtc/common_audio/blocker.cc b/webrtc/common_audio/blocker.cc
index 359e881a4ba7313611d6219706c2d22a4ff227d8..78a15d8238f3c21edf4b9000dd6532953ac4277a 100644
--- a/webrtc/common_audio/blocker.cc
+++ b/webrtc/common_audio/blocker.cc
@@ -22,10 +22,10 @@ void AddFrames(const float* const* a,
                const float* const* b,
                int b_start_index,
                size_t num_frames,
-               int num_channels,
+               size_t num_channels,
                float* const* result,
                size_t result_start_index) {
-  for (int i = 0; i < num_channels; ++i) {
+  for (size_t i = 0; i < num_channels; ++i) {
     for (size_t j = 0; j < num_frames; ++j) {
       result[i][j + result_start_index] =
           a[i][j + a_start_index] + b[i][j + b_start_index];
@@ -37,10 +37,10 @@ void AddFrames(const float* const* a,
 void CopyFrames(const float* const* src,
                 size_t src_start_index,
                 size_t num_frames,
-                int num_channels,
+                size_t num_channels,
                 float* const* dst,
                 size_t dst_start_index) {
-  for (int i = 0; i < num_channels; ++i) {
+  for (size_t i = 0; i < num_channels; ++i) {
     memcpy(&dst[i][dst_start_index],
            &src[i][src_start_index],
            num_frames * sizeof(dst[i][dst_start_index]));
@@ -51,10 +51,10 @@ void CopyFrames(const float* const* src,
 void MoveFrames(const float* const* src,
                 size_t src_start_index,
                 size_t num_frames,
-                int num_channels,
+                size_t num_channels,
                 float* const* dst,
                 size_t dst_start_index) {
-  for (int i = 0; i < num_channels; ++i) {
+  for (size_t i = 0; i < num_channels; ++i) {
     memmove(&dst[i][dst_start_index],
             &src[i][src_start_index],
             num_frames * sizeof(dst[i][dst_start_index]));
@@ -64,8 +64,8 @@ void MoveFrames(const float* const* src,
 void ZeroOut(float* const* buffer,
              size_t starting_idx,
              size_t num_frames,
-             int num_channels) {
-  for (int i = 0; i < num_channels; ++i) {
+             size_t num_channels) {
+  for (size_t i = 0; i < num_channels; ++i) {
     memset(&buffer[i][starting_idx], 0,
            num_frames * sizeof(buffer[i][starting_idx]));
   }
@@ -75,9 +75,9 @@ void ZeroOut(float* const* buffer,
 // stored in |frames|.
 void ApplyWindow(const float* window,
                  size_t num_frames,
-                 int num_channels,
+                 size_t num_channels,
                  float* const* frames) {
-  for (int i = 0; i < num_channels; ++i) {
+  for (size_t i = 0; i < num_channels; ++i) {
     for (size_t j = 0; j < num_frames; ++j) {
       frames[i][j] = frames[i][j] * window[j];
     }
@@ -100,8 +100,8 @@ namespace webrtc {
 
 Blocker::Blocker(size_t chunk_size,
                  size_t block_size,
-                 int num_input_channels,
-                 int num_output_channels,
+                 size_t num_input_channels,
+                 size_t num_output_channels,
                  const float* window,
                  size_t shift_amount,
                  BlockerCallback* callback)
@@ -166,8 +166,8 @@ Blocker::Blocker(size_t chunk_size,
 // TODO(claguna): Look at using ring buffers to eliminate some copies.
 void Blocker::ProcessChunk(const float* const* input,
                            size_t chunk_size,
-                           int num_input_channels,
-                           int num_output_channels,
+                           size_t num_input_channels,
+                           size_t num_output_channels,
                            float* const* output) {
   CHECK_EQ(chunk_size, chunk_size_);
   CHECK_EQ(num_input_channels, num_input_channels_);