[cros] Don't succeed if user has default profile picturewq

chrome/browser/chromeos/login/profile_image_downloader.h

Index: chrome/browser/chromeos/login/profile_image_downloader.h
diff --git a/chrome/browser/chromeos/login/profile_image_downloader.h b/chrome/browser/chromeos/login/profile_image_downloader.h
index a1e85e981da5a51739876fafa1ec4b9e0fa33866..2a9f9094dfc944d4cc3a878b13639f1f1a8aa410 100644
--- a/chrome/browser/chromeos/login/profile_image_downloader.h
+++ b/chrome/browser/chromeos/login/profile_image_downloader.h
@@ -23,6 +23,17 @@ class ProfileImageDownloader : public content::URLFetcherDelegate,
                                public ImageDecoder::Delegate,
                                public content::NotificationObserver {
  public:
+  // Enum for reporting histograms about profile picture download.
+  enum DownloadResult {
+    kDownloadSuccessChanged,
+    kDownloadSuccess,
+    kDownloadFailure,
+    kDownloadDefault,
+
+    // Must be the last, convenient count.
+    kDownloadResultsCount
+  };
+
   // Reports on success or failure of Profile image download.
   class Delegate {
    public:
@@ -33,6 +44,10 @@ class ProfileImageDownloader : public content::URLFetcherDelegate,
 
     // Called on download failure.
     virtual void OnDownloadFailure() {}
+
+    // Called when user has the default profile image and we won't download
+    // it.
+    virtual void OnDownloadDefaultImage() {}
   };
 
   explicit ProfileImageDownloader(Delegate* delegate);
@@ -61,6 +76,9 @@ class ProfileImageDownloader : public content::URLFetcherDelegate,
   // Returns an empty string on failure.
   std::string GetProfileImageURL(const std::string& data) const;
 
+  // Returns true if the image url is url of the default profile picture.
+  bool IsDefaultProfileImageURL(const std::string& url) const;
+
   // Issues the first request to get user profile image.
   void StartFetchingImage();