Remove -Wno-unused-lambda-capture flag from default_warnings

This CL is part of
https://chromium-review.googlesource.com/c/chromium/src/+/1286017

This CL was uploaded by git cl split.

R=scottmg@chromium.org

Bug: 681136
Change-Id: Id22ba18bda2f051b12b5ca439df66eab6f42260d
Reviewed-on: https://chromium-review.googlesource.com/c/1288511
Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
Reviewed-by: Scott Graham <scottmg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#601821}

build/config/compiler/BUILD.gn

@@ -1472,9 +1472,6 @@ config("default_warnings") {
         # TODO(thakis): https://crbug.com/604888
         "-Wno-undefined-var-template",
 
-        # TODO(hans): https://crbug.com/681136
-        "-Wno-unused-lambda-capture",
-
         # TODO(hans): https://crbug.com/766891
         "-Wno-null-pointer-arithmetic",
       ]
@@ -1610,6 +1607,13 @@ config("no_chromium_code") {
       # suppressing them individually, we just blanket suppress them here.
       "-Wno-unused-variable",
     ]
+
+    if (!is_nacl) {
+      cflags += [
+        # TODO(hans): https://crbug.com/681136
+        "-Wno-unused-lambda-capture",
+      ]
+    }
   }
 
   configs = [ ":default_warnings" ]