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..2758590fea0f19145fb48e42bfd49a963eb60173 100644
--- a/cc/output/gl_renderer.cc
+++ b/cc/output/gl_renderer.cc
@@ -2192,14 +2192,23 @@ 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
+  // 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_->UniformMatrix4fvWithCustomMatrixCHROMIUM(
+      program->vertex_shader().tex_matrix_location(), 1,
+      12345 /* TODO(liberato): enum */, false, gl_matrix);

[piman, 2016/02/16 23:56:33]

The enum will go to gpu/GLES2/gl2extchromium.h
See GL_SUBSCRIBED_VALUES_BUFFER_CHROMIUM and e.g. glBindValuebufferCHROMIUM as
an example to specify validation

[liberato (no reviews please), 2016/02/17 17:50:32]

Done.

+
   gl_->Uniform1i(program->fragment_shader().sampler_location(), 0);
 
   SetShaderOpacity(quad->shared_quad_state->opacity,