Stop emitting physical footprint on macOS 10.11.

chrome/browser/metrics/metrics_memory_details.cc

Index: chrome/browser/metrics/metrics_memory_details.cc
diff --git a/chrome/browser/metrics/metrics_memory_details.cc b/chrome/browser/metrics/metrics_memory_details.cc
index 1ba164c11e5636a809faf41812297d4f6d804727..2b9bc7d3b0a97cfccf26b48d391299c1486db53d 100644
--- a/chrome/browser/metrics/metrics_memory_details.cc
+++ b/chrome/browser/metrics/metrics_memory_details.cc
@@ -176,8 +176,8 @@ void MetricsMemoryDetails::UpdateHistograms() {
         continue;
       case content::PROCESS_TYPE_GPU:
 #if defined(OS_MACOSX)
-        // Physical footprint was introduced in macOS 10.11.
-        if (base::mac::IsAtLeastOS10_11()) {
+        // Physical footprint was introduced in macOS 10.12.
+        if (base::mac::IsAtLeastOS10_12()) {
           UMA_HISTOGRAM_MEMORY_LARGE_MB(
               "Memory.Experimental.Gpu.PhysicalFootprint.MacOS",
               browser.processes[index].phys_footprint / 1024 / 1024);