Pull cacheinvalidations code directory into chromium repo.

third_party/cacheinvalidation/src/google/cacheinvalidation/client.proto

Index: third_party/cacheinvalidation/src/google/cacheinvalidation/client.proto
diff --git a/third_party/cacheinvalidation/src/google/cacheinvalidation/client.proto b/third_party/cacheinvalidation/src/google/cacheinvalidation/client.proto
new file mode 100644
index 0000000000000000000000000000000000000000..e79b32735088c295e386bc5a80bcf1a879e2d20a
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+++ b/third_party/cacheinvalidation/src/google/cacheinvalidation/client.proto
@@ -0,0 +1,64 @@
+// Copyright 2011 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Specification of protocol buffers that are used only on the client side.
+//
+// Note: unless otherwise specified in a comment, all fields in all messages
+// are required, even though they are listed as optional.
+
+syntax = "proto2";
+
+option optimize_for = LITE_RUNTIME;
+
+package ipc.invalidation;
+
+import "client_protocol.proto";
+
+// An object that is serialized and given to clients for acknowledgement
+// purposes.
+message AckHandleP {
+  optional InvalidationP invalidation = 1;
+}
+
+// The state persisted at a client so that it can be used after a reboot.
+message PersistentTiclState {
+  // Last token received from the server (required).
+  optional bytes client_token = 1;
+
+  // Last time a message was sent to the server (optional). Must be a value
+  // returned by the clock in the Ticl system resources.
+  optional int64 last_message_send_time_ms = 2 [default = 0];
+}
+
+// An envelope containing a Ticl's internal state, along with a digest of the
+// serialized representation of this state, to ensure its integrity across
+// reads and writes to persistent storage.
+message PersistentStateBlob {
+  // The (important parts of the) Ticl's internal state.
+  optional PersistentTiclState ticl_state = 1;
+
+  // Implementation-specific message authentication code for the Ticl state.
+  optional bytes authentication_code = 2;
+}
+
+// State of a Ticl RunState.
+message RunStateP {
+  enum State {
+    NOT_STARTED = 1;
+    STARTED = 2;
+    STOPPED = 3;
+  }
+  optional State state = 1;
+}
+