Add a way to send the resource percentage signal to the RC.

chrome/browser/page_load_metrics/observers/resource_tracking_page_load_metrics_observer_unittest.cc

Index: chrome/browser/page_load_metrics/observers/resource_tracking_page_load_metrics_observer_unittest.cc
diff --git a/chrome/browser/page_load_metrics/observers/resource_tracking_page_load_metrics_observer_unittest.cc b/chrome/browser/page_load_metrics/observers/resource_tracking_page_load_metrics_observer_unittest.cc
index 73611a0e1356f36cb57b75fb400145631bba66c3..bc01fb4b83462db576887ff6e4903bf2bc48a809 100644
--- a/chrome/browser/page_load_metrics/observers/resource_tracking_page_load_metrics_observer_unittest.cc
+++ b/chrome/browser/page_load_metrics/observers/resource_tracking_page_load_metrics_observer_unittest.cc
@@ -5,6 +5,8 @@
 #include "chrome/browser/page_load_metrics/observers/resource_tracking_page_load_metrics_observer.h"
 
 #include "chrome/browser/page_load_metrics/observers/page_load_metrics_observer_test_harness.h"
+#include "components/offline_pages/core/background/resource_tracker_observer.h"
+#include "components/offline_pages/core/background/resource_tracker_observer_stub.h"
 
 namespace {
 const char kFakeUrl[] = "http://www.google.com/nothingotseehere.html";
@@ -15,13 +17,17 @@ namespace page_load_metrics {
 class ResourceTrackingPageLoadMetricsObserverTest
     : public page_load_metrics::PageLoadMetricsObserverTestHarness {
  public:
-  ResourceTrackingPageLoadMetricsObserverTest() : observer_(nullptr) {}
+  ResourceTrackingPageLoadMetricsObserverTest()
+      : observer_(nullptr),
+        resource_watcher_(new offline_pages::ResourceTrackerObserverStub) {}
+
+  // FUTURE: If we ever override SetUp, ensure we call the base class SetUp.

[RyanSturm, 2017/05/10 18:30:13]

nit: I don't think this comment is necessary.

[Pete Williamson, 2017/05/10 19:00:52]

Removed (I added it because it cost me a few hours to discover originally).

 
  protected:
   void RegisterObservers(page_load_metrics::PageLoadTracker* tracker) override {
     std::unique_ptr<page_load_metrics::ResourceTrackingPageLoadMetricsObserver>
-        observer(
-            new page_load_metrics::ResourceTrackingPageLoadMetricsObserver());
+        observer(new page_load_metrics::ResourceTrackingPageLoadMetricsObserver(
+            resource_watcher()));
     // Keep track of the observer pointer so we can check it in the unit test.
     observer_ = observer.get();
     tracker->AddObserver(std::move(observer));
@@ -31,10 +37,15 @@ class ResourceTrackingPageLoadMetricsObserverTest
     return observer_;
   }
 
+  offline_pages::ResourceTrackerObserverStub* resource_watcher() {
+    return resource_watcher_;
+  }
+
  private:
   // observer_ is owned by the last created PageLoadTracker, and its lifetime is
   // dictated by that tracker's lifetime.
   page_load_metrics::ResourceTrackingPageLoadMetricsObserver* observer_;
+  offline_pages::ResourceTrackerObserverStub* resource_watcher_;
 };
 
 TEST_F(ResourceTrackingPageLoadMetricsObserverTest, StartAndFinish) {
@@ -70,6 +81,14 @@ TEST_F(ResourceTrackingPageLoadMetricsObserverTest, StartAndFinish) {
       content::ResourceType::RESOURCE_TYPE_IMAGE, &started, &completed);
   EXPECT_EQ(2, started);
   EXPECT_EQ(1, completed);
+  int64_t resource_watcher_started = -1;
+  int64_t resource_watcher_completed = -1;
+  ASSERT_NE(nullptr, resource_watcher());
+  resource_watcher()->GetResourcePercentageCounts(
+      offline_pages::ResourceDataType::IMAGE, &resource_watcher_started,
+      &resource_watcher_completed);
+  EXPECT_EQ(2, resource_watcher_started);
+  EXPECT_EQ(1, resource_watcher_completed);
 }
 
 }  // namespace page_load_metrics