Define AudioBuffer and VideoFrame for mojo

media/base/audio_buffer.cc

Index: media/base/audio_buffer.cc
diff --git a/media/base/audio_buffer.cc b/media/base/audio_buffer.cc
index 564cff156bbb7f5defa7067439731a1efa44c500..6f9c8e17b26c559b103994480915f1a75e9071c1 100644
--- a/media/base/audio_buffer.cc
+++ b/media/base/audio_buffer.cc
@@ -37,7 +37,8 @@ AudioBuffer::AudioBuffer(SampleFormat sample_format,
       timestamp_(timestamp),
       duration_(end_of_stream_
                     ? base::TimeDelta()
-                    : CalculateDuration(adjusted_frame_count_, sample_rate_)) {
+                    : CalculateDuration(adjusted_frame_count_, sample_rate_)),
+      data_size_(0) {
   CHECK_GE(channel_count_, 0);
   CHECK_LE(channel_count_, limits::kMaxChannels);
   CHECK_GE(frame_count, 0);
@@ -62,8 +63,9 @@ AudioBuffer::AudioBuffer(SampleFormat sample_format,
     DCHECK_GE(block_size_per_channel, data_size);
 
     // Allocate a contiguous buffer for all the channel data.
-    data_.reset(static_cast<uint8*>(base::AlignedAlloc(
-        channel_count_ * block_size_per_channel, kChannelAlignment)));
+    data_size_ = channel_count_ * block_size_per_channel;
+    data_.reset(
+        static_cast<uint8*>(base::AlignedAlloc(data_size_, kChannelAlignment)));
     channel_data_.reserve(channel_count_);
 
     // Copy each channel's data into the appropriate spot.
@@ -82,9 +84,9 @@ AudioBuffer::AudioBuffer(SampleFormat sample_format,
          sample_format_ == kSampleFormatF32) << sample_format_;
   // Allocate our own buffer and copy the supplied data into it. Buffer must
   // contain the data for all channels.
-  data_size *= channel_count_;
+  data_size_ = data_size * channel_count_;
   data_.reset(
-      static_cast<uint8*>(base::AlignedAlloc(data_size, kChannelAlignment)));
+      static_cast<uint8*>(base::AlignedAlloc(data_size_, kChannelAlignment)));
   channel_data_.reserve(1);
   channel_data_.push_back(data_.get());
   if (data)