Revert of [gn] Don't use PIE for host executables (patchset #2 id:20001 of...

Revert of [gn] Don't use PIE for host executables (patchset #2 id:20001 of https://codereview.chromium.org/2179303003/ )

Reason for revert:
Breaks roll: https://codereview.chromium.org/2182043004/

Original issue's description:
> [gn] Don't use PIE for host executables
>
> Using PIE switches on ASLR. With mksnapshot, this can lead
> to non-deterministic snapshots.
>
> BUG=v8:5233
>
> Committed: https://crrev.com/4ca39b53245619d94a80a93939613774e68e4649
> Cr-Commit-Position: refs/heads/master@{#38084}

TBR=jochen@chromium.org,vogelheim@chromium.org,yangguo@chromium.org,machenbach@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5233

Review-Url: https://codereview.chromium.org/2187613003
Cr-Commit-Position: refs/heads/master@{#38092}

BUILD.gn

@@ -2181,9 +2181,6 @@ if (current_toolchain == v8_snapshot_toolchain) {
   v8_executable("mksnapshot") {
     visibility = [ ":*" ]  # Only targets in this file can depend on this.
 
-    # This is executed on the host only and doesn't require PIE.
-    want_pie = false
-
     sources = [
       "src/snapshot/mksnapshot.cc",
     ]
@@ -2206,9 +2203,6 @@ v8_executable("mkpeephole") {
   # bytecodes that are described in bytecodes.{cc,h}.
   visibility = [ ":*" ]  # Only targets in this file can depend on this.
 
-  # This is executed on the host only and doesn't require PIE.
-  want_pie = false
-
   sources = [
     "src/interpreter/bytecode-peephole-optimizer.h",
     "src/interpreter/bytecodes.cc",

gni/v8.gni

@@ -87,19 +87,13 @@ template("v8_source_set") {
 
 template("v8_executable") {
   executable(target_name) {
-    forward_variables_from(invoker, "*", [ "configs", "want_pie"])
+    forward_variables_from(invoker, "*", [ "configs" ])
     configs += invoker.configs
     configs -= v8_remove_configs
     configs += v8_add_configs
-    if (!defined(invoker.want_pie) || invoker.want_pie) {
-      if (is_linux) {
-        # For enabling ASLR.
-        ldflags = [ "-pie" ]
-      }
-    } else {
-      if (is_android) {
-        configs -= "//build/config/android:executable_config"
-      }
+    if (is_linux) {
+      # For enabling ASLR.
+      ldflags = [ "-pie" ]
     }
   }
 }