WebGL & 16-bit video stream: upload to FLOAT texture.

third_party/WebKit/public/platform/WebMediaPlayer.h

Index: third_party/WebKit/public/platform/WebMediaPlayer.h
diff --git a/third_party/WebKit/public/platform/WebMediaPlayer.h b/third_party/WebKit/public/platform/WebMediaPlayer.h
index 75db1339d060c067c15e633cd2baa69f5af61843..35ce896eeb264c47548d0bfd2ec10cb5104e833e 100644
--- a/third_party/WebKit/public/platform/WebMediaPlayer.h
+++ b/third_party/WebKit/public/platform/WebMediaPlayer.h
@@ -105,6 +105,13 @@ class WebMediaPlayer {
   typedef WebString TrackId;
   enum TrackType { TextTrack, AudioTrack, VideoTrack };
 
+  enum TexImageFunctionID {
+    TexImage2D,
+    TexSubImage2D,
+    TexImage3D,
+    TexSubImage3D
+  };
+
   virtual ~WebMediaPlayer() {}
 
   virtual void load(LoadType, const WebMediaPlayerSource&, CORSMode) = 0;
@@ -207,6 +214,23 @@ class WebMediaPlayer {
     return false;
   }
 
+  // Do tex(Sub)Image2D/3D for current frame. If it is not implemented for given
+  // parameters or fails, it returns false.
+  virtual bool texImageImpl(TexImageFunctionID functionID,
+                            unsigned target,
+                            gpu::gles2::GLES2Interface* gl,
+                            int level,
+                            int internalformat,
+                            unsigned format,
+                            unsigned type,
+                            int xoffset,
+                            int yoffset,
+                            int zoffset,
+                            bool flipY,
+                            bool premultiplyAlpha) {
+    return false;
+  }
+
   virtual WebAudioSourceProvider* getAudioSourceProvider() { return nullptr; }
 
   virtual void setContentDecryptionModule(