[Windows MSVC CFG] Turning on linker CFG for all. Removing CFG compile.

build/config/win/BUILD.gn

Index: build/config/win/BUILD.gn
diff --git a/build/config/win/BUILD.gn b/build/config/win/BUILD.gn
index e00bfcb8e0754da5273b568b72f009f4088fd7eb..a7db829cd6b1bc33b5f81917f905f40927067b5c 100644
--- a/build/config/win/BUILD.gn
+++ b/build/config/win/BUILD.gn
@@ -252,6 +252,15 @@ config("common_linker_setup") {
     ldflags += [ "/DYNAMICBASE" ]
   }
 
+  # Control Flow Guard (CFG)
+  # https://msdn.microsoft.com/en-us/library/windows/desktop/mt637065.aspx
+  # /DYNAMICBASE (ASLR) is turned off in debug builds, therefore CFG can’t be
+  # turned on either.
+  if (!is_debug) {
+    # Turn on CFG in msvc linker, regardless of compiler used.
+    ldflags += [ "/guard:cf" ]
+  }
+
   if (win_linker_timing) {
     ldflags += [
       "/time",
@@ -260,17 +269,6 @@ config("common_linker_setup") {
   }
 }
 
-# Control Flow Guard (CFG)
-# https://msdn.microsoft.com/en-us/library/windows/desktop/mt637065.aspx
-config("win_msvc_cfg") {
-  # /DYNAMICBASE (ASLR) is turned off in debug builds, therefore CFG can’t be
-  # turned on either.
-  if (!is_clang && !is_debug) {
-    cflags = [ "/guard:cf" ]
-    ldflags = [ "/guard:cf" ]
-  }
-}
-
 # CRT --------------------------------------------------------------------------
 
 # Configures how the runtime library (CRT) is going to be used.