Remove implicit conversions from scoped_refptr to T* in media/

media/base/video_frame_pool.cc

Index: media/base/video_frame_pool.cc
diff --git a/media/base/video_frame_pool.cc b/media/base/video_frame_pool.cc
index 800d0470f3e367789b9d1c90d84c1949ad81fec4..88308e979b8f06159471d8b8246d88852648a257 100644
--- a/media/base/video_frame_pool.cc
+++ b/media/base/video_frame_pool.cc
@@ -66,7 +66,7 @@ scoped_refptr<VideoFrame> VideoFramePool::PoolImpl::CreateFrame(
 
   scoped_refptr<VideoFrame> frame;
 
-  while (!frame && !frames_.empty()) {
+  while (!frame.get() && !frames_.empty()) {
       scoped_refptr<VideoFrame> pool_frame = frames_.front();
       frames_.pop_front();
 
@@ -80,7 +80,7 @@ scoped_refptr<VideoFrame> VideoFramePool::PoolImpl::CreateFrame(
       }
   }
 
-  if (!frame) {
+  if (!frame.get()) {
     frame = VideoFrame::CreateFrame(
         format, coded_size, visible_rect, natural_size, timestamp);
   }