Support needed to measure user and service traffic in Chrome.

components/suggestions/suggestions_service.cc

Index: components/suggestions/suggestions_service.cc
diff --git a/components/suggestions/suggestions_service.cc b/components/suggestions/suggestions_service.cc
index 666ee51bcc3b01208fb16bdec746ae7fa2fb0700..04789378ceabe0fe45f76252559f500ec809c140 100644
--- a/components/suggestions/suggestions_service.cc
+++ b/components/suggestions/suggestions_service.cc
@@ -16,6 +16,8 @@
 #include "base/strings/stringprintf.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/time/time.h"
+// The following line is commented because it violates dependency.
+// #include "chrome/browser/net/data_use_user_data.h"

[sclittle, 2015/08/19 23:32:40]

Yeah, the data_use_measurement stuff should probably be moved into a new
component if you want to depend on it from other components.

Note that code in components isn't allowed to have chrome/ dependencies, like
the commented out line here.

Here's an example component for wifi prefetch:
https://code.google.com/p/chromium/codesearch#chromium/src/components/precache/

You could put the data_use_measurement stuff inside a content/ subdirectory so
that it can depend on the content/ stuff it needs, and put the
data_use_user_data stuff inside a core/ subdirectory.

[amohammadkhan, 2015/08/21 23:06:32]

Done.

 #include "components/pref_registry/pref_registry_syncable.h"
 #include "components/suggestions/blacklist_store.h"
 #include "components/suggestions/suggestions_store.h"
@@ -253,6 +255,10 @@ scoped_ptr<net::URLFetcher> SuggestionsService::CreateSuggestionsRequest(
     const GURL& url) {
   scoped_ptr<net::URLFetcher> request =
       net::URLFetcher::Create(0, url, net::URLFetcher::GET, this);
+  request->SetURLRequestUserData(
+        DataUseUserData::kUserDataKey,
+        base::Bind(&CreateDataUseUserData,
+                   "Suggestion"));
   request->SetLoadFlags(net::LOAD_DISABLE_CACHE);
   request->SetRequestContext(url_request_context_);
   // Add Chrome experiment state to the request headers.