color: Add command line flag to force output color space

ui/gfx/icc_profile.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gfx/icc_profile.h"
 
 #include <list>
 
+#include "base/command_line.h"
 #include "base/containers/mru_cache.h"
 #include "base/lazy_instance.h"
 #include "base/synchronization/lock.h"
 #include "third_party/skia/include/core/SkColorSpaceXform.h"
 #include "third_party/skia/include/core/SkICC.h"
 #include "ui/gfx/skia_color_space_util.h"
+#include "ui/gfx/switches.h"
 
 namespace gfx {
 
 const uint64_t ICCProfile::test_id_adobe_rgb_ = 1;
 const uint64_t ICCProfile::test_id_color_spin_ = 2;
 const uint64_t ICCProfile::test_id_generic_rgb_ = 3;
 const uint64_t ICCProfile::test_id_srgb_ = 4;
 const uint64_t ICCProfile::test_id_no_analytic_tr_fn_ = 5;
 const uint64_t ICCProfile::test_id_a2b_only_ = 6;
 const uint64_t ICCProfile::test_id_overshoot_ = 7;
@@ skipping 73 matching lines @@
   icc_profile.id_ = new_profile_id;
   icc_profile.data_.insert(icc_profile.data_.begin(), data_as_char,
                            data_as_char + size);
   icc_profile.ComputeColorSpaceAndCache();
   return icc_profile;
 }
 
 #if !defined(OS_WIN) && !defined(OS_MACOSX) && !defined(USE_X11)
 // static
 ICCProfile ICCProfile::FromBestMonitor() {
+  if (HasForcedProfile())
+    return GetForcedProfile();
   return ICCProfile();
 }
 #endif
 
 // static
+bool ICCProfile::HasForcedProfile() {
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kForceColorProfile);
+}
+
+// static
+ICCProfile ICCProfile::GetForcedProfile() {
+  DCHECK(HasForcedProfile());
+  ICCProfile icc_profile;
+  std::string value =
+      base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
+          switches::kForceColorProfile);
+  if (value == "srgb") {
+    ColorSpace::CreateSRGB().GetICCProfile(&icc_profile);
+  } else if (value == "generic-rgb") {
+    ColorSpace generic_rgb_color_space(ColorSpace::PrimaryID::APPLE_GENERIC_RGB,
+                                       ColorSpace::TransferID::GAMMA18);
+    generic_rgb_color_space.GetICCProfile(&icc_profile);
+  } else if (value == "bt2020-gamma18") {
+    ColorSpace generic_rgb_color_space(ColorSpace::PrimaryID::BT2020,
+                                       ColorSpace::TransferID::GAMMA18);
+    generic_rgb_color_space.GetICCProfile(&icc_profile);
+  } else {
+    LOG(ERROR) << "Invalid forced color profile";
+  }
+  return icc_profile;
+}
+
+// static
 const std::vector<char>& ICCProfile::GetData() const {
   return data_;
 }
 
 const ColorSpace& ICCProfile::GetColorSpace() const {
   // Move this ICC profile to the most recently used end of the cache,
   // inserting if needed.
   if (id_) {
     Cache& cache = g_cache.Get();
     base::AutoLock lock(cache.lock);
@@ skipping 127 matching lines @@
 
   // Add to the cache.
   {
     Cache& cache = g_cache.Get();
     base::AutoLock lock(cache.lock);
     cache.id_to_icc_profile_mru.Put(id_, *this);
   }
 }
 
 }  // namespace gfx