Remove enable_topchrome_md build flag

chrome/BUILD.gn

Index: chrome/BUILD.gn
diff --git a/chrome/BUILD.gn b/chrome/BUILD.gn
index 7052c70cef4ce3ff5a6850ecbca5b55526e02ed9..b2cf233ce9026295a938a30812864e77fbf7472e 100644
--- a/chrome/BUILD.gn
+++ b/chrome/BUILD.gn
@@ -630,7 +630,7 @@ if (is_win) {
       sources += [ "$root_out_dir/chrome_200_percent.pak" ]
     }
 
-    if (enable_topchrome_md) {
+    if (is_mac) {

[sky, 2016/05/19 23:11:58]

I was confused by these checks, until I understood your comment about them being
mac only. Could 'chrome_material' be better named? Perhaps chrome_material_mac
given they are mac only now? Same comment for target names and theme_resources.

[Evan Stade, 2016/05/19 23:20:10]

They're going away even on mac, so is_mac is temporary. Would a comment here or
somewhere be helpful iyo?

[sky, 2016/05/20 16:27:54]

I // TODO(estade): temporary, will remove soon, see http://XXXX
would be helpful

[Evan Stade, 2016/05/20 16:54:51]

Done.

       sources += [ "$root_out_dir/chrome_material_100_percent.pak" ]
 
       if (enable_hidpi) {
@@ -1078,7 +1078,7 @@ group("packed_resources") {
     public_deps += [ ":repack_chrome_200_percent" ]
   }
 
-  if (enable_topchrome_md) {
+  if (is_mac) {
     public_deps += [ ":repack_chrome_material_100_percent" ]
 
     if (enable_hidpi) {
@@ -1329,7 +1329,6 @@ template("chrome_repack_material_percent") {
     # All sources should also have deps for completeness.
     sources = [
       "$root_gen_dir/chrome/theme_resources_material_${percent}_percent.pak",
-      "$root_gen_dir/components/components_resources_material_${percent}_percent.pak",
     ]
 
     deps = [
@@ -1354,7 +1353,7 @@ template("chrome_repack_material_percent") {
   }
 }
 
-if (enable_topchrome_md) {
+if (is_mac) {
   chrome_repack_material_percent("repack_chrome_material_100_percent") {
     percent = "100"
   }