Bug 1073039. Change uniform workaround to use raw gl. r=mstange

Bug 1073036 is changing the way we track shader state. Making
this use raw gl instead of Activate() allows CompositorOGL
to remain ignorant of it.

--HG--
extra : rebase_source : ed7e98b35b3fb7c7ea902ee921e09f9cf620b245

gfx/layers/opengl/CompositorOGL.cpp

@@ -1272,7 +1272,9 @@ CompositorOGL::DrawQuad(const Rect& aRect,
         // won't pick up the TexturePass2 uniform change below if we don't do
         // something to force it. Re-activating the shader seems to be one way
         // of achieving that.
-        program->Activate();
+        GLint program;
+        mGLContext->fGetIntegerv(LOCAL_GL_CURRENT_PROGRAM, &program);
+        mGLContext->fUseProgram(program);
       }
 #endif