Introduce a layering in the invalidation component as public and impl.

The invalidation component has dependencies due to specific
implementations of the inv_client, inv_service etc.
Consumers of invalidations do not need to depend on these.

This change exports the InvalidationHandler interface in a separate target
'invalidation_public' which only depends on //google/cacheinvalidation

Thus the signin component can implement to InvalidationHandler to refresh
account information without introducing a cyclic dependency.

The crux of the change is:

Move {components/invalidation/ => components/invalidation/public}:
-ack_handle.cc
-ack_handle.h
-ack_handler.cc
-ack_handler.h
-invalidation.cc
-invalidation.h
-invalidation_export.h
-invalidation_handler.cc
-invalidation_handler.h
-invalidation_service.h
-invalidation_util.cc
-invalidation_util.h
-invalidator_state.cc
-invalidator_state.h
-object_id_invalidation_map.cc
-object_id_invalidation_map.h
-single_object_invalidation_set.cc
-single_object_invalidation_set.h

Move {components/invalidation/ => components/invalidation/impl}:
other files

Thus the dependency chain is:
//chrome/browser/ -> //components/invalidation/impl -> components/invalidation/public

Now invalidation consumers can directly depend on //components/invalidation/public
which has only //google/cacheinvalidation has a dependency.

BUG=503131

Review URL: https://codereview.chromium.org/1191393008

Cr-Commit-Position: refs/heads/master@{#336413}

1 files changed, 1 insertions, 1 deletions

diff --git a/chrome/chrome_tests.gypi b/chrome/chrome_tests.gypi
index fc6f020..98c85c2 100644
--- a/chrome/chrome_tests.gypi
+++ b/chrome/chrome_tests.gypi
@@ -2678,7 +2678,7 @@
         'chrome',
         'test_support_common',
         '../base/base.gyp:base',
-        '../components/components.gyp:invalidation',
+        '../components/components.gyp:invalidation_impl',
         '../components/components.gyp:invalidation_test_support',
         '../net/net.gyp:net',
         '../skia/skia.gyp:skia',