Update V8 DEPS.

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/1cfb9fe..1c66ba1

Rolling v8/buildtools: https://chromium.googlesource.com/chromium/buildtools/+log/73ddd64..93a751e

TBR=machenbach@chromium.org,hablich@chromium.org,sergiyb@chromium.org

Change-Id: I05cc6e607da1ae1f7afbd147735a5ccb83e9d6e6
Reviewed-on: https://chromium-review.googlesource.com/762988Reviewed-by: v8 autoroll <v8-autoroll@chromium.org>
Commit-Queue: v8 autoroll <v8-autoroll@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49282}

DEPS

@@ -9,7 +9,7 @@ vars = {
 
 deps = {
   'v8/build':
-    Var('chromium_url') + '/chromium/src/build.git' + '@' + '1cfb9fe8586c0fb260fbe998b9e5e22c73bbbf7b',
+    Var('chromium_url') + '/chromium/src/build.git' + '@' + '1c66ba19cf35b63b0694717ffa7a6e24ebb9409f',
   'v8/tools/gyp':
     Var('chromium_url') + '/external/gyp.git' + '@' + 'd61a9397e668fa9843c4aa7da9e79460fe590bfb',
   'v8/third_party/icu':
@@ -17,7 +17,7 @@ deps = {
   'v8/third_party/instrumented_libraries':
     Var('chromium_url') + '/chromium/src/third_party/instrumented_libraries.git' + '@' + 'e07d437dc8b65ca96ebd3b7d4aa303cd2ec0ec45',
   'v8/buildtools':
-    Var('chromium_url') + '/chromium/buildtools.git' + '@' + '73ddd64be624a6f935f312a72d2da7f0ed70daa5',
+    Var('chromium_url') + '/chromium/buildtools.git' + '@' + '93a751e41bd93e373548759c6c5453bd95b6f35e',
   'v8/base/trace_event/common':
     Var('chromium_url') + '/chromium/src/base/trace_event/common.git' + '@' + '0e9a47d74970bee1bbfc063c47215406f8918699',
   'v8/third_party/android_tools': {