Cast: Flow hw encoder initialization error to extensions API

media/cast/test/fake_video_encode_accelerator.cc

Index: media/cast/test/fake_video_encode_accelerator.cc
diff --git a/media/cast/test/fake_video_encode_accelerator.cc b/media/cast/test/fake_video_encode_accelerator.cc
index 0442c0c9283e75088f03d61a916255cfa8e49d05..4076cb2223805aeb444b32a69f2b26a1e6070d92 100644
--- a/media/cast/test/fake_video_encode_accelerator.cc
+++ b/media/cast/test/fake_video_encode_accelerator.cc
@@ -23,6 +23,7 @@ FakeVideoEncodeAccelerator::FakeVideoEncodeAccelerator(
       stored_bitrates_(stored_bitrates),
       client_(NULL),
       first_(true),
+      will_initialization_succeed_(true),
       weak_this_factory_(this) {
   DCHECK(stored_bitrates_);
 }
@@ -37,6 +38,8 @@ bool FakeVideoEncodeAccelerator::Initialize(
     VideoCodecProfile output_profile,
     uint32 initial_bitrate,
     Client* client) {
+  if (!will_initialization_succeed_)
+    return false;
   client_ = client;
   if (output_profile != media::VP8PROFILE_ANY &&
       output_profile != media::H264PROFILE_MAIN) {