dpwa: Clean up ProviderType

DesktopPWAsWithoutExtensions has shipped and tests have been
migrated, so removing unused enums and functions.


Bug: 1065748
Change-Id: I701e516ebf016e81487f684f535252135ff9119b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2466169
Commit-Queue: Eric Willigers <ericwilligers@chromium.org>
Reviewed-by: Eric Willigers <ericwilligers@chromium.org>
Cr-Commit-Position: refs/heads/master@{#816329}

chrome/browser/web_applications/test/web_app_test.cc

@@ -9,16 +9,6 @@
 
 namespace web_app {
 
-std::string ProviderTypeParamToString(
-    const ::testing::TestParamInfo<ProviderType>& provider_type) {
-  switch (provider_type.param) {
-    case ProviderType::kBookmarkApps:
-      return "BookmarkApps";
-    case ProviderType::kWebApps:
-      return "WebApps";
-  }
-}
-
 void TestAcceptDialogCallback(
     content::WebContents* initiator_web_contents,
     std::unique_ptr<WebApplicationInfo> web_app_info,

chrome/browser/web_applications/test/web_app_test.h

@@ -20,11 +20,6 @@ class WebContents;
 
 namespace web_app {
 
-enum class ProviderType { kBookmarkApps, kWebApps };
-
-std::string ProviderTypeParamToString(
-    const ::testing::TestParamInfo<ProviderType>& provider_type);
-
 void TestAcceptDialogCallback(
     content::WebContents* initiator_web_contents,
     std::unique_ptr<WebApplicationInfo> web_app_info,