Add GLStreamTextureImage

ui/gl/gl_image.h

Index: ui/gl/gl_image.h
diff --git a/ui/gl/gl_image.h b/ui/gl/gl_image.h
index 6b98fe995b8127d26fd47191959c56a6a09ec59f..a3228c82dc772422f9f4e2725081365ef45a7757 100644
--- a/ui/gl/gl_image.h
+++ b/ui/gl/gl_image.h
@@ -25,6 +25,10 @@ class ProcessMemoryDump;
 }
 }
 
+namespace gfx {
+class Transform;
+}
+
 namespace gl {
 
 // Encapsulates an image that can be bound and/or copied to a texture, hiding
@@ -74,6 +78,13 @@ class GL_EXPORT GLImage : public base::RefCounted<GLImage> {
                             uint64_t process_tracing_id,
                             const std::string& dump_name) = 0;
 
+  // Get the matrix
+  // Copy a custom matrix for this image into |matrix|.  |matrixId| describes
+  // the matrix in question.  Returns true if |matrix| is filled in, false
+  // if this GLImage doesn't support the custom matrix.  |matrix| is unmodified
+  // in that case.
+  virtual bool GetCustomMatrix(int matrixId, float matrix[16]);
+
  protected:
   virtual ~GLImage() {}