Send compressed histograms with system logs when sending feedback.

chrome/common/extensions/api/feedback_private.idl

Index: chrome/common/extensions/api/feedback_private.idl
diff --git a/chrome/common/extensions/api/feedback_private.idl b/chrome/common/extensions/api/feedback_private.idl
index 93f799c3c5702009177bae1d86393a3e45344e2e..ba48e72a4ca70092cac3016c2ff30e88e41859a8 100644
--- a/chrome/common/extensions/api/feedback_private.idl
+++ b/chrome/common/extensions/api/feedback_private.idl
@@ -47,6 +47,9 @@ namespace feedbackPrivate {
     // feedback report.
     SystemInformation[]? systemInformation;
 
+    // True if we have permission to add histograms to this feedback report.
+    boolean sendHistograms;
+
     // TODO(rkc): Remove these once we have bindings to send blobs to Chrome.
     // Used internally to store the blob uuid after parameter customization.
     DOMString? attachedFileBlobUuid;