Make --watchfs a common command option.

Adding an options parameter to DiffAwareness#getCurrentView seems like the
simplest way to achieve that.

Alternatives considered:
1. Making the diff awareness modules stateful. However, I did not want to do so
as I've also been working on improving the module API to reduce state, or at
least to have a proper lifecycle management for any necessary state.

2. Making the watchFs flag a constructor parameter. However, that would also
invalidate any implementations that don't use the flag (of which we have
several).

3. Only passing in a single boolean flag instead of an options class provider;
however, this is a more principled, futureproof API, which allows other
modules / awareness implementations to use their own options.

RELNOTES: --watchfs is now a command option; the startup option of the same
    name is deprecated. I.e., use bazel build --watchfs, not blaze --watchfs
    build.

--
MOS_MIGRATED_REVID=136154395

1 files changed, 2 insertions, 1 deletions

diff --git a/src/test/java/com/google/devtools/build/lib/pkgcache/IncrementalLoadingTest.java b/src/test/java/com/google/devtools/build/lib/pkgcache/IncrementalLoadingTest.java
index c137cd3dff..32e8b4b30a 100644
--- a/src/test/java/com/google/devtools/build/lib/pkgcache/IncrementalLoadingTest.java
+++ b/src/test/java/com/google/devtools/build/lib/pkgcache/IncrementalLoadingTest.java
@@ -57,6 +57,7 @@ import com.google.devtools.build.lib.vfs.inmemoryfs.InMemoryFileSystem;
 import com.google.devtools.build.skyframe.SkyFunction;
 import com.google.devtools.build.skyframe.SkyFunctionName;
 import com.google.devtools.common.options.Options;
+import com.google.devtools.common.options.OptionsClassProvider;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.util.ArrayList;
@@ -411,7 +412,7 @@ public class IncrementalLoadingTest {
       private View currentView;
 
       @Override
-      public View getCurrentView() {
+      public View getCurrentView(OptionsClassProvider options) {
         lastView = currentView;
         currentView = new View() {};
         return currentView;