Add option for SKP capture without reencoding images

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index 9fe485ed44e7648329690d38ecec381c3d78e4cf..aed7cc158f9967926b967b5d1265530420170c5d 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -972,6 +972,12 @@ const char kSimulateOutdatedNoAU[]          = "simulate-outdated-no-au";
 // Simulates an update being available.
 const char kSimulateUpgrade[]               = "simulate-upgrade";
 
+// Skips reencoding bitmaps as PNGs when the encoded data is unavailable
+// during SKP capture.  This allows for obtaining an accurate sample of
+// the types of images on the web, rather than being weighted towards PNGs
+// that we have encoded ourselves.
+const char kSkipReencodingOnSKPCapture[]    = "skip-reencoding-on-skp-capture";
+
 // Speculative resource prefetching.
 const char kSpeculativeResourcePrefetching[] =
     "speculative-resource-prefetching";