Added UMA for usage of BudgetAPI calls.

chrome/browser/budget_service/budget_manager_browsertest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/run_loop.h"
 #include "build/build_config.h"
 #include "chrome/browser/budget_service/budget_manager.h"
 #include "chrome/browser/budget_service/budget_manager_factory.h"
@@ skipping 97 matching lines @@
   // A second reserve should fail because there is not enough budget.
   ASSERT_TRUE(RunScript("documentReserveBudget()", &script_result));
   ASSERT_EQ("failed - not able to reserve budget", script_result);
 
   // Consume should succeed because there is an existing reservation.
   ConsumeReservation();
   ASSERT_TRUE(success());
 
   // Second consume should fail because the reservation is consumed.
   ConsumeReservation();
-  ASSERT_FALSE(success());
+  ASSERT_TRUE(success());

[Peter Beverloo, 2016/11/28 14:14:06]

why?

[harkness, 2016/11/28 16:09:09]

I was doing testing on another CL and somehow two files leaked over. Removed
now.

 }
 
 IN_PROC_BROWSER_TEST_F(BudgetManagerBrowserTest, BudgetInWorker) {
   std::string script_result;
 
   ASSERT_TRUE(RunScript("registerServiceWorker()", &script_result));
   ASSERT_EQ("ok - service worker registered", script_result);
 
   LoadTestPage();  // Reload to become controlled.
 
@@ skipping 26 matching lines @@
 
   ConsumeReservation();
   ASSERT_TRUE(success());
 
   // One more consume should fail, because all reservations are consumed.
   ConsumeReservation();
   ASSERT_FALSE(success());
 }
 
 }  // namespace