Enable SafeBrowsing lookups for ws: and wss: URLs

Modify the three "real" implementations of SafeBrowsingDatabaseManager
to enable lookups for "ws:" and "wss:" URLs.

This change doesn't cause SafeBrowsing checks to be performed on
WebSocket URLs. No ws: or wss: URLs will be passed to the
SafeBrowsingDatabaseManager yet. It just ensures that they will actually
be looked up when a future change causes them to be checked.

This change is required for both designs described in the "WebSocket
SafeBrowsing Support" design document:
https://docs.google.com/document/d/1iR3XMIQukqlXb6ajIHE91apHZAxyF_wvRoB5JGeJYPs/edit

BUG=644744

Review-Url: https://codereview.chromium.org/2925233002
Cr-Commit-Position: refs/heads/master@{#478553}

chrome/browser/safe_browsing/local_database_manager.cc

@@ -336,8 +336,8 @@ bool LocalSafeBrowsingDatabaseManager::CanCheckResourceType(
 }
 
 bool LocalSafeBrowsingDatabaseManager::CanCheckUrl(const GURL& url) const {
-  return url.SchemeIs(url::kFtpScheme) || url.SchemeIs(url::kHttpScheme) ||
-         url.SchemeIs(url::kHttpsScheme);
+  return url.SchemeIsHTTPOrHTTPS() || url.SchemeIs(url::kFtpScheme) ||
+         url.SchemeIsWSOrWSS();
 }
 
 bool LocalSafeBrowsingDatabaseManager::CheckDownloadUrl(

components/safe_browsing_db/remote_database_manager.cc

@@ -173,8 +173,8 @@ bool RemoteSafeBrowsingDatabaseManager::CanCheckResourceType(
 }
 
 bool RemoteSafeBrowsingDatabaseManager::CanCheckUrl(const GURL& url) const {
-  return url.SchemeIs(url::kHttpsScheme) || url.SchemeIs(url::kHttpScheme) ||
-         url.SchemeIs(url::kFtpScheme);
+  return url.SchemeIsHTTPOrHTTPS() || url.SchemeIs(url::kFtpScheme) ||
+         url.SchemeIsWSOrWSS();
 }
 
 bool RemoteSafeBrowsingDatabaseManager::ChecksAreAlwaysAsync() const {

components/safe_browsing_db/v4_local_database_manager.cc

@@ -200,8 +200,8 @@ bool V4LocalDatabaseManager::CanCheckResourceType(
 }
 
 bool V4LocalDatabaseManager::CanCheckUrl(const GURL& url) const {
-  return url.SchemeIs(url::kHttpsScheme) || url.SchemeIs(url::kHttpScheme) ||
-         url.SchemeIs(url::kFtpScheme);
+  return url.SchemeIsHTTPOrHTTPS() || url.SchemeIs(url::kFtpScheme) ||
+         url.SchemeIsWSOrWSS();
 }
 
 bool V4LocalDatabaseManager::ChecksAreAlwaysAsync() const {