Load and apply a vcgt table from an ICC file to the internal display

ui/display/chromeos/test/action_logger_util.cc

Index: ui/display/chromeos/test/action_logger_util.cc
diff --git a/ui/display/chromeos/test/action_logger_util.cc b/ui/display/chromeos/test/action_logger_util.cc
index c798b48c06c468d051c42353bcd1389375188796..526580aeffdf97954235dac11088e8a1e7439703 100644
--- a/ui/display/chromeos/test/action_logger_util.cc
+++ b/ui/display/chromeos/test/action_logger_util.cc
@@ -5,6 +5,7 @@
 #include "ui/display/chromeos/test/action_logger_util.h"
 
 #include "base/format_macros.h"
+#include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "ui/display/types/display_mode.h"
 #include "ui/display/types/display_snapshot.h"
@@ -52,6 +53,23 @@ std::string GetSetHDCPStateAction(const DisplaySnapshot& output,
                             output.display_id(), state);
 }
 
+std::string SetGammaRampAction(const ui::DisplaySnapshot& output,
+                               const std::vector<uint16_t>& r,
+                               const std::vector<uint16_t>& g,
+                               const std::vector<uint16_t>& b) {
+  DCHECK_EQ(r.size(), g.size());
+  DCHECK_EQ(g.size(), b.size());
+
+  std::string table;
+  for (size_t i = 0; i < r.size(); ++i) {
+    table += base::StringPrintf(",rgb[%" PRIuS "]=%04x%04x%04x", i, r[i], g[i],
+                                b[i]);
+  }
+
+  return base::StringPrintf("set_gamma_ramp(id=%" PRId64 "%s)",
+                            output.display_id(), table.c_str());
+}
+
 std::string JoinActions(const char* action, ...) {
   std::string actions;