glBindTexImage2DCHROMIUM should retain pixel format.

content/common/gpu/stream_texture_android.cc

Index: content/common/gpu/stream_texture_android.cc
diff --git a/content/common/gpu/stream_texture_android.cc b/content/common/gpu/stream_texture_android.cc
index 5985821862f418f8de2ae73981b8decd2bcb9bc3..ff625316289a97916fe73e1cccf319be28bdce89 100644
--- a/content/common/gpu/stream_texture_android.cc
+++ b/content/common/gpu/stream_texture_android.cc
@@ -165,6 +165,10 @@ gfx::Size StreamTexture::GetSize() {
   return size_;
 }
 
+unsigned StreamTexture::GetInternalFormat() {
+  return GL_RGBA;
+}
+
 bool StreamTexture::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(StreamTexture, message)