Add partial report flag for CBCM reporting

Add a new enum field PartialReportType for ChromeDesktopReportRequest
and ChromeOsUserReportRequest. It's used to indicate that the report
doesn't contain all information but only extension request.

It's the same change as cl 337368623.

Bug: 1137964
Change-Id: I15a0055437049df073476a9dd89198c503704e65
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2481243Reviewed-by: Julian Pastarmov <pastarmovj@chromium.org>
Commit-Queue: Owen Min <zmin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#818521}

components/policy/proto/device_management_backend.proto

@@ -1896,6 +1896,12 @@ message OSReport {
   optional string version = 3;
 }
 
+// An enum shows which information a partial CBCM report contains.
+enum PartialReportType {
+  UNSPECIFIED = 0;
+  EXTENSION_REQUEST = 1;
+}
+
 // Report the status of a Chrome installation on non-Chrome OS platform.
 message ChromeDesktopReportRequest {
   // The name of the machine within its local network. The string is a JSON
@@ -1926,6 +1932,10 @@ message ChromeDesktopReportRequest {
   // TODO(crbug.com/1105938): This will also replace the computer_name and
   // serial_number fields.
   optional BrowserDeviceIdentifier browser_device_identifier = 9;
+  // A list of flags indicates that the report only contains particular
+  // information. When list is empty or unset, the report should contains all
+  // information.
+  repeated PartialReportType partial_report_types = 10;
 }
 
 // Report user level status on Chrome OS platform. Chrome OS equivalent of
@@ -1935,6 +1945,10 @@ message ChromeOsUserReportRequest {
   optional BrowserReport browser_report = 1;
   // Android applications installed in primary profile.
   repeated AndroidAppInfo android_app_infos = 2;
+  // A list of flags indicates that the report only contains particular
+  // information. When list is empty or unset, the report should contains all
+  // information.
+  repeated PartialReportType partial_report_types = 3;
 }
 
 // A validation issue from validating a policy value that was contained in