Create entries in about://flags for tab capture scaling quality.

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 05dd26aa6a4f049c4d6351f11e56e418c219d71e..680bfa2e71b7d272e4f31e3f3b6c9e049d72cc70 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -229,6 +229,26 @@ const Experiment::Choice kSimpleCacheBackendChoices[] = {
     switches::kUseSimpleCacheBackend, "on"}
 };
 
+const Experiment::Choice kTabCaptureUpscaleQualityChoices[] = {
+  { IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
+  { IDS_FLAGS_TAB_CAPTURE_SCALE_QUALITY_FAST,
+    switches::kTabCaptureUpscaleQuality, "fast" },
+  { IDS_FLAGS_TAB_CAPTURE_SCALE_QUALITY_GOOD,
+    switches::kTabCaptureUpscaleQuality, "good" },
+  { IDS_FLAGS_TAB_CAPTURE_SCALE_QUALITY_BEST,
+    switches::kTabCaptureUpscaleQuality, "best" },
+};
+
+const Experiment::Choice kTabCaptureDownscaleQualityChoices[] = {
+  { IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
+  { IDS_FLAGS_TAB_CAPTURE_SCALE_QUALITY_FAST,
+    switches::kTabCaptureDownscaleQuality, "fast" },
+  { IDS_FLAGS_TAB_CAPTURE_SCALE_QUALITY_GOOD,
+    switches::kTabCaptureDownscaleQuality, "good" },
+  { IDS_FLAGS_TAB_CAPTURE_SCALE_QUALITY_BEST,
+    switches::kTabCaptureDownscaleQuality, "best" },
+};
+
 // RECORDING USER METRICS FOR FLAGS:
 // -----------------------------------------------------------------------------
 // The first line of the experiment is the internal name. If you'd like to
@@ -1487,6 +1507,22 @@ const Experiment kExperiments[] = {
     SINGLE_VALUE_TYPE(switches::kEnableOmniboxAutoCompletionForIme)
   },
 #endif
+#if defined(USE_AURA)
+  {
+    "tab-capture-upscale-quality",
+    IDS_FLAGS_TAB_CAPTURE_UPSCALE_QUALITY_NAME,
+    IDS_FLAGS_TAB_CAPTURE_UPSCALE_QUALITY_DESCRIPTION,
+    kOsAll,
+    MULTI_VALUE_TYPE(kTabCaptureUpscaleQualityChoices)
+  },
+  {
+    "tab-capture-downscale-quality",
+    IDS_FLAGS_TAB_CAPTURE_DOWNSCALE_QUALITY_NAME,
+    IDS_FLAGS_TAB_CAPTURE_DOWNSCALE_QUALITY_DESCRIPTION,
+    kOsAll,
+    MULTI_VALUE_TYPE(kTabCaptureDownscaleQualityChoices)
+  },
+#endif
 };
 
 const Experiment* experiments = kExperiments;