Renamed enable_printing and printing_mode in *.gyp* and .*gn* files.

chrome/BUILD.gn

Index: chrome/BUILD.gn
diff --git a/chrome/BUILD.gn b/chrome/BUILD.gn
index ad58f0642a354f9204adb46dfbb0832532d2bb9f..619e617d32e5f116b7f43af0b64c7027d50c58b3 100644
--- a/chrome/BUILD.gn
+++ b/chrome/BUILD.gn
@@ -218,9 +218,9 @@ group("browser_dependencies") {
     ]
   }
 
-  if (printing_mode != 0) {
+  if (enable_basic_printing || enable_print_preview) {

[brettw, 2014/11/05 18:02:52]

Can we require that enable_print_preview implies basic printing to simplify
these conditionals>?

[Vitaly Buka (NO REVIEWS), 2014/11/05 19:17:47]

No. We will disable basic printing on ChromeOS now, and maybe on other desktops
in future. 

     deps += [ "//printing" ]
-    if (printing_mode == 1) {
+    if (enable_print_preview) {
       deps += [ "//chrome/service" ]
     }
   }