Added memory-monitor for ChromeOS.

components/memory_coordinator/browser/BUILD.gn

Index: components/memory_coordinator/browser/BUILD.gn
diff --git a/components/memory_coordinator/browser/BUILD.gn b/components/memory_coordinator/browser/BUILD.gn
index 834a26f8bb5f3a372ff2256d3200b70d156c080d..4af740a50f76a96d81a4dab779c8b8482a574932 100644
--- a/components/memory_coordinator/browser/BUILD.gn
+++ b/components/memory_coordinator/browser/BUILD.gn
@@ -10,12 +10,25 @@ component("browser") {
     "memory_coordinator.h",
     "memory_monitor.cc",
     "memory_monitor.h",
-    "memory_monitor_linux.cc",
-    "memory_monitor_linux.h",
-    "memory_monitor_win.cc",
-    "memory_monitor_win.h",
   ]
 
+  if (is_chromeos) {
+    sources += [
+      "memory_monitor_chromeos.cc",

[chrisha, 2016/09/14 09:53:34]

The automagic source-file filtering doesn't work for _chromeos files?

/sadface

[bcwhite, 2016/09/14 13:19:27]

It does...  but it also includes the _linux files which meant for dead code and
a duplicate static Create() method.

+      "memory_monitor_chromeos.h",
+    ]
+  } else if (is_linux) {
+    sources += [
+      "memory_monitor_linux.cc",
+      "memory_monitor_linux.h",
+    ]
+  } else if (is_win) {
+    sources += [
+      "memory_monitor_win.cc",
+      "memory_monitor_win.h",
+    ]
+  }
+
   defines = [ "MEMORY_COORDINATOR_IMPLEMENTATION" ]
 
   deps = [
@@ -33,12 +46,18 @@ source_set("unit_tests") {
 
   sources = [
     "memory_coordinator_unittest.cc",
-    "memory_monitor_linux_unittest.cc",
-    "memory_monitor_win_unittest.cc",
     "test_memory_monitor.cc",
     "test_memory_monitor.h",
   ]
 
+  if (is_chromeos) {
+    sources += [ "memory_monitor_chromeos_unittest.cc" ]
+  } else if (is_linux) {
+    sources += [ "memory_monitor_linux_unittest.cc" ]
+  } else if (is_win) {
+    sources += [ "memory_monitor_win_unittest.cc" ]
+  }
+
   deps = [
     ":browser",
     "//testing/gtest",