Re-enable image_decode_bench target

third_party/WebKit/Source/platform/BUILD.gn

Index: third_party/WebKit/Source/platform/BUILD.gn
diff --git a/third_party/WebKit/Source/platform/BUILD.gn b/third_party/WebKit/Source/platform/BUILD.gn
index ce43a12f7cfa3c102fcea5d4ead92f1dca4c7147..e4c0a7d77f607c9424fb69b0d0e738ac1428b6a0 100644
--- a/third_party/WebKit/Source/platform/BUILD.gn
+++ b/third_party/WebKit/Source/platform/BUILD.gn
@@ -1827,6 +1827,28 @@ test("blink_platform_unittests") {
   include_dirs = [ "$root_gen_dir/blink" ]
 }
 
+test("image_decode_bench") {
+  visibility = []  # Allow re-assignment of list.
+  visibility = [ "*" ]

[Simon Hosie, 2016/11/15 01:50:00]

The `visibility` value was copied from a unittest target.  I don't know what the
significance of it is or if it's correct this way.

+
+  sources = [
+    "testing/ImageDecodeBench.cpp",
+  ]
+
+  deps = [
+    ":blink_common",
+    ":platform",
+    "//third_party/WebKit/Source/wtf",
+  ]
+
+  configs += [
+    "//third_party/WebKit/Source/wtf:wtf_config",
+    "//third_party/WebKit/Source:config",
+  ]
+
+  defines = [ "INSIDE_BLINK" ]
+}
+
 test("blink_platform_perftests") {
   sources = [
     "scheduler/base/task_queue_manager_delegate_for_test.cc",