Move core/fileapi unit_tests target inside core/fileapi directory.

This way I won't need to bug top-level core/ OWNERS just to add new unit
tests for fileapi code.

Bug: none
Change-Id: I877e42443fd8e819029674d7dc2b6e6b58a1f1b7
Reviewed-on: https://chromium-review.googlesource.com/881941
Commit-Queue: Marijn Kruisselbrink <mek@chromium.org>
Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#531375}

third_party/WebKit/Source/core/BUILD.gn

@@ -1799,8 +1799,6 @@ jumbo_source_set("unit_tests") {
     "fetch/ReadableStreamBytesConsumerTest.cpp",
     "fetch/RequestTest.cpp",
     "fetch/ResponseTest.cpp",
-    "fileapi/FileListTest.cpp",
-    "fileapi/FileTest.cpp",
     "frame/BrowserControlsTest.cpp",
     "frame/DOMTimerTest.cpp",
     "frame/DeferredLoadingTest.cpp",
@@ -2113,6 +2111,7 @@ jumbo_source_set("unit_tests") {
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/WebKit/Source/core/editing:unit_tests",
+    "//third_party/WebKit/Source/core/fileapi:unit_tests",
   ]
 
   # FIXME: Enable mojo unittests on Android after fixing data dependency.

third_party/WebKit/Source/core/editing/BUILD.gn

@@ -407,6 +407,6 @@ jumbo_source_set("unit_tests") {
   deps = [
     "//testing/gmock",
     "//testing/gtest",
-    "//third_party/WebKit/Source/core:core",
+    "//third_party/WebKit/Source/core",
   ]
 }

third_party/WebKit/Source/core/fileapi/BUILD.gn

@@ -28,3 +28,23 @@ blink_core_sources("fileapi") {
     "URLRegistry.h",
   ]
 }
+
+jumbo_source_set("unit_tests") {
+  testonly = true
+  sources = [
+    "FileListTest.cpp",
+    "FileTest.cpp",
+  ]
+
+  configs += [
+    "//third_party/WebKit/Source/core:blink_core_pch",
+    "//third_party/WebKit/Source:config",
+    "//third_party/WebKit/Source:inside_blink",
+  ]
+
+  deps = [
+    "//testing/gmock",
+    "//testing/gtest",
+    "//third_party/WebKit/Source/core",
+  ]
+}