Add policy switch for location reporting and decode all policies in device_policy_cache.

chrome/browser/policy/proto/chrome_device_policy.proto

Index: chrome/browser/policy/proto/chrome_device_policy.proto
diff --git a/chrome/browser/policy/proto/chrome_device_policy.proto b/chrome/browser/policy/proto/chrome_device_policy.proto
index 0773f370256b687f2ed52f92a57bcaef024f3d9d..e5ca07567353f4e2f70362626d5cb358ae002cae 100644
--- a/chrome/browser/policy/proto/chrome_device_policy.proto
+++ b/chrome/browser/policy/proto/chrome_device_policy.proto
@@ -95,10 +95,13 @@ message DeviceReportingProto {
   optional bool report_version_info = 1;
   optional bool report_activity_times = 2;
   optional bool report_boot_mode = 3;
+  optional bool report_location = 4;
 }
 
 message EphemeralUsersEnabledProto {
-  // Determines whether users should be treated as ephemeral.
+  // Determines whether users should be treated as ephemeral. In ephemeral users
+  // mode, no cryptohome is created for the user, but a tmpfs mount is used
+  // instead such that upon logout all user state is discarded.
   optional bool ephemeral_users_enabled = 1;
 }