Add GLStreamTextureImage

cc/output/gl_renderer.cc

Index: cc/output/gl_renderer.cc
diff --git a/cc/output/gl_renderer.cc b/cc/output/gl_renderer.cc
index 2b20d25d39f18f17a362c4b0d88c4efa9d506731..e10be559256374dab28f8aae4787fa2c1bd23cd0 100644
--- a/cc/output/gl_renderer.cc
+++ b/cc/output/gl_renderer.cc
@@ -2192,14 +2192,22 @@ void GLRenderer::DrawStreamVideoQuad(const DrawingFrame* frame,
   SetUseProgram(program->program());
 
   ToGLMatrix(&gl_matrix[0], quad->matrix);
-  gl_->UniformMatrix4fv(program->vertex_shader().tex_matrix_location(), 1,
-                        false, gl_matrix);
 
   ResourceProvider::ScopedReadLockGL lock(resource_provider_,
                                           quad->resource_id());
+
   DCHECK_EQ(GL_TEXTURE0, GetActiveTextureUnit(gl_));
   gl_->BindTexture(GL_TEXTURE_EXTERNAL_OES, lock.texture_id());
 
+  // TODO(liberato): stream_texture_android should stop sending |gl_matrix| to
+  // the video frame provider with this change (and to us), but it should
+  // start reporting the current matrix via GLImage::GetCustomMatrix.  Until

[reveman, 2016/02/19 19:15:39]

nit: s/GLImage::GetCustomMatrix/GLStreamTextureImage::GetTextureMatrix/

[liberato (no reviews please), 2016/02/19 19:48:11]

Done.

+  // then, though, this will use the matrix that we provide to it, unless the
+  // GLImage overrides it.  This lets it also work with AVDACodecImage, which
+  // provides the correct custom matrix and supplies a default one to us.
+  gl_->UniformMatrix4fvStreamTextureMatrixCHROMIUM(
+      program->vertex_shader().tex_matrix_location(), false, gl_matrix);
+
   gl_->Uniform1i(program->fragment_shader().sampler_location(), 0);
 
   SetShaderOpacity(quad->shared_quad_state->opacity,