Implement GL_EXT_sRGB_write_control for GL.

BUG=angleproject:1547
BUG=655247

Change-Id: I3f04ddc7032e4a47eb21ff3b8586c5b47415bb64
Reviewed-on: https://chromium-review.googlesource.com/400958
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
diff --git a/src/libANGLE/Context.cpp b/src/libANGLE/Context.cpp
index a6ab472..8b31eb4 100644
--- a/src/libANGLE/Context.cpp
+++ b/src/libANGLE/Context.cpp
@@ -370,6 +370,7 @@
 
     mBlitDirtyBits.set(State::DIRTY_BIT_SCISSOR_TEST_ENABLED);
     mBlitDirtyBits.set(State::DIRTY_BIT_SCISSOR);
+    mBlitDirtyBits.set(State::DIRTY_BIT_FRAMEBUFFER_SRGB);
     mBlitDirtyObjects.set(State::DIRTY_OBJECT_READ_FRAMEBUFFER);
     mBlitDirtyObjects.set(State::DIRTY_OBJECT_DRAW_FRAMEBUFFER);