Fix use_canvas_skia = 0

ui/gfx/BUILD.gn

Index: ui/gfx/BUILD.gn
diff --git a/ui/gfx/BUILD.gn b/ui/gfx/BUILD.gn
index a74f5ac46c5a83aacf73b0c9522b58b3b3910da4..d11c095d258342721d60e2f8877ebaf825f30b95 100644
--- a/ui/gfx/BUILD.gn
+++ b/ui/gfx/BUILD.gn
@@ -58,7 +58,7 @@ component("gfx") {
     "break_list.h",
     "canvas.cc",
     "canvas.h",
-    "canvas_android.cc",
+    "canvas_notimplemented.cc",
     "canvas_paint_mac.h",
     "canvas_paint_mac.mm",
     "canvas_paint_win.cc",
@@ -253,7 +253,7 @@ component("gfx") {
       sources += [ "render_text_ozone.cc" ]
     }
   }
-  
+
   # iOS.
   if (is_ios) {
     sources -= [
@@ -312,6 +312,11 @@ component("gfx") {
     configs += [ "//build/config/linux:fontconfig" ]
   }
 
+  # Canvas_Skia stuff.
+  if (use_canvas_skia) {
+    sources -= [ "canvas_notimplemented.cc" ]
+  }
+
   # Ozone stuff.
   if (use_ozone) {
     sources += [