Add RTC_ prefix to (D)CHECKs and related macros.

webrtc/modules/video_coding/codecs/vp9/vp9_frame_buffer_pool.cc

Index: webrtc/modules/video_coding/codecs/vp9/vp9_frame_buffer_pool.cc
diff --git a/webrtc/modules/video_coding/codecs/vp9/vp9_frame_buffer_pool.cc b/webrtc/modules/video_coding/codecs/vp9/vp9_frame_buffer_pool.cc
index 6e16bc1468f2be900ceae1625399ffe66aeed16e..ce600ec1a5b6003c491c12d0b26aeeef14678869 100644
--- a/webrtc/modules/video_coding/codecs/vp9/vp9_frame_buffer_pool.cc
+++ b/webrtc/modules/video_coding/codecs/vp9/vp9_frame_buffer_pool.cc
@@ -34,7 +34,7 @@ void Vp9FrameBufferPool::Vp9FrameBuffer::SetSize(size_t size) {
 
 bool Vp9FrameBufferPool::InitializeVpxUsePool(
     vpx_codec_ctx* vpx_codec_context) {
-  DCHECK(vpx_codec_context);
+  RTC_DCHECK(vpx_codec_context);
   // Tell libvpx to use this pool.
   if (vpx_codec_set_frame_buffer_functions(
           // In which context to use these callback functions.
@@ -53,7 +53,7 @@ bool Vp9FrameBufferPool::InitializeVpxUsePool(
 
 rtc::scoped_refptr<Vp9FrameBufferPool::Vp9FrameBuffer>
 Vp9FrameBufferPool::GetFrameBuffer(size_t min_size) {
-  DCHECK_GT(min_size, 0u);
+  RTC_DCHECK_GT(min_size, 0u);
   rtc::scoped_refptr<Vp9FrameBuffer> available_buffer = nullptr;
   {
     rtc::CritScope cs(&buffers_lock_);
@@ -101,8 +101,8 @@ void Vp9FrameBufferPool::ClearPool() {
 int32 Vp9FrameBufferPool::VpxGetFrameBuffer(void* user_priv,
                                             size_t min_size,
                                             vpx_codec_frame_buffer* fb) {
-  DCHECK(user_priv);
-  DCHECK(fb);
+  RTC_DCHECK(user_priv);
+  RTC_DCHECK(fb);
   Vp9FrameBufferPool* pool = static_cast<Vp9FrameBufferPool*>(user_priv);
 
   rtc::scoped_refptr<Vp9FrameBuffer> buffer = pool->GetFrameBuffer(min_size);
@@ -120,8 +120,8 @@ int32 Vp9FrameBufferPool::VpxGetFrameBuffer(void* user_priv,
 // static
 int32 Vp9FrameBufferPool::VpxReleaseFrameBuffer(void* user_priv,
                                                 vpx_codec_frame_buffer* fb) {
-  DCHECK(user_priv);
-  DCHECK(fb);
+  RTC_DCHECK(user_priv);
+  RTC_DCHECK(fb);
   Vp9FrameBuffer* buffer = static_cast<Vp9FrameBuffer*>(fb->priv);
   if (buffer != nullptr) {
     buffer->Release();