Introduce a client minimum picture pool size

content/common/gpu/media/fake_video_decode_accelerator.cc

Index: content/common/gpu/media/fake_video_decode_accelerator.cc
diff --git a/content/common/gpu/media/fake_video_decode_accelerator.cc b/content/common/gpu/media/fake_video_decode_accelerator.cc
index eff497f48e7fbad6bb33a02ca00774ab59628a71..61f544538faa12f06c1e13a4c111effade8aa9a2 100644
--- a/content/common/gpu/media/fake_video_decode_accelerator.cc
+++ b/content/common/gpu/media/fake_video_decode_accelerator.cc
@@ -42,6 +42,7 @@ FakeVideoDecodeAccelerator::~FakeVideoDecodeAccelerator() {
 }
 
 bool FakeVideoDecodeAccelerator::Initialize(media::VideoCodecProfile profile,
+                                            uint32 min_picture_count,
                                             Client* client) {
   DCHECK(child_task_runner_->BelongsToCurrentThread());
   if (profile == media::VIDEO_CODEC_PROFILE_UNKNOWN) {
@@ -51,7 +52,8 @@ bool FakeVideoDecodeAccelerator::Initialize(media::VideoCodecProfile profile,
   // V4L2VideoDecodeAccelerator waits until first decode call to ask for buffers
   // This class asks for it on initialization instead.
   client_ = client;
-  client_->ProvidePictureBuffers(kNumBuffers,
+  client_->ProvidePictureBuffers(std::max(min_picture_count,
+                                          static_cast<uint32>(kNumBuffers)),
                                  frame_buffer_size_,
                                  kDefaultTextureTarget);
   return true;