Reland "Move (hopefully) remaining isolate related variables to toolchain.gypi"

BUG=chromium:609107
R=machenbach@chromium.org

Review-Url: https://codereview.chromium.org/2032733003
Cr-Commit-Position: refs/heads/master@{#36677}

gypfiles/standalone.gypi

@@ -112,9 +112,6 @@
       'use_goma%': 0,
       'gomadir%': '',
 
-      # Check if valgrind directories are present.
-      'has_valgrind%': 0,
-
       'test_isolation_mode%': 'noop',
 
       'conditions': [
@@ -164,7 +161,6 @@
     'test_isolation_mode%': '<(test_isolation_mode)',
     'fastbuild%': '<(fastbuild)',
     'coverage%': '<(coverage)',
-    'has_valgrind%': '<(has_valgrind)',
 
     # Add a simple extras solely for the purpose of the cctests
     'v8_extra_library_files': ['../test/cctest/test-extra.js'],

gypfiles/toolchain.gypi

@@ -37,6 +37,8 @@
     'tsan%': 0,
     'ubsan%': 0,
     'ubsan_vptr%': 0,
+    'has_valgrind%': 0,
+    'coverage%': 0,
     'v8_target_arch%': '<(target_arch)',
     'v8_host_byteorder%': '<!(python -c "import sys; print sys.byteorder")',
     # Native Client builds currently use the V8 ARM JIT and