[vr] Move VrAssetsComponentInstaller to Chrome base module

VrAssetsComponentInstaller is used at Chrome startup to check wether we
want to install the VR assets component. However, the
VrAssetsComponentInstaller was part of the VR DFM, which is not part of
the Chrome bundle. Therefore, move VrAssetsComponentInstaller to the
base module so that it is always available.

Bug: 876053
Change-Id: I43b3215a0ffaf9d29f8c45edf094257f987db431
Reviewed-on: https://chromium-review.googlesource.com/1182300Reviewed-by: Tommy Nyquist <nyquist@chromium.org>
Commit-Queue: Tibor Goldschwendt <tiborg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#585211}

chrome/android/java_sources.gni

@@ -1640,8 +1640,10 @@ chrome_java_sources = [
 ]
 
 if (enable_vr) {
-  chrome_java_sources +=
-      [ "java/src/org/chromium/chrome/browser/vr/SilenceLintErrors.java" ]
+  chrome_java_sources += [
+    "java/src/org/chromium/chrome/browser/component_updater/VrAssetsComponentInstaller.java",
+    "java/src/org/chromium/chrome/browser/vr/SilenceLintErrors.java",
+  ]
 }
 
 chrome_test_java_sources = [

chrome/browser/android/vr/BUILD.gn

@@ -133,7 +133,6 @@ static_library("vr_android") {
 
 android_library("java") {
   java_files = [
-    "//chrome/android/java/src/org/chromium/chrome/browser/component_updater/VrAssetsComponentInstaller.java",
     "//chrome/android/java/src/org/chromium/chrome/browser/vr/AndroidUiGestureTarget.java",
     "//chrome/android/java/src/org/chromium/chrome/browser/vr/AndroidVSyncHelper.java",
     "//chrome/android/java/src/org/chromium/chrome/browser/vr/EmptySniffingVrViewContainer.java",