viz: Make hit testing mojoms match README.md

This CL moves hit_test code to match the directory structure in README.md.

Bug: 722935
Change-Id: I1565e9de3ec9387e13651b4a89d623bbc4267773
Reviewed-on: https://chromium-review.googlesource.com/581798Reviewed-by: Robert Kroeger <rjkroege@chromium.org>
Commit-Queue: Fady Samuel <fsamuel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#488820}

components/viz/service/BUILD.gn

@@ -83,7 +83,7 @@ viz_component("service") {
     "//cc/surfaces",
     "//gpu/command_buffer/client:gles2_interface",
     "//gpu/ipc:command_buffer",
-    "//services/viz/hit_test/public/interfaces",
+    "//services/viz/public/interfaces/hit_test",
     "//ui/gfx",
     "//ui/gfx/geometry",
     "//ui/latency",
@@ -160,7 +160,7 @@ viz_source_set("unit_tests") {
     "//gpu/command_buffer/client:gles2_implementation",
     "//gpu/ipc:gl_in_process_context",
     "//media",
-    "//services/viz/hit_test/public/interfaces",
+    "//services/viz/public/interfaces/hit_test",
     "//skia",
     "//testing/gmock",
     "//testing/gtest",

services/viz/public/interfaces/compositing/BUILD.gn

@@ -4,7 +4,7 @@
 
 import("//mojo/public/tools/bindings/mojom.gni")
 
-mojom("interfaces") {
+mojom("compositing") {
   sources = [
     "resource_settings.mojom",
   ]
@@ -22,7 +22,7 @@ source_set("tests") {
   ]
 
   deps = [
-    ":interfaces",
+    ":compositing",
     "//base/test:test_support",
     "//media/capture/mojo:capture_types",
     "//services/service_manager/public/cpp",

services/viz/hit_test/public/interfaces/BUILD.gn → services/viz/public/interfaces/hit_test/BUILD.gn

@@ -4,7 +4,7 @@
 
 import("//mojo/public/tools/bindings/mojom.gni")
 
-mojom("interfaces") {
+mojom("hit_test") {
   sources = [
     "hit_test_region_list.mojom",
   ]