Remove ChromeBrowserProvider::GetFaviconForURL().

ios/chrome/browser/ui/webui/chrome_web_ui_ios_controller_factory.mm

Index: ios/chrome/browser/ui/webui/chrome_web_ui_ios_controller_factory.mm
diff --git a/ios/chrome/browser/ui/webui/chrome_web_ui_ios_controller_factory.mm b/ios/chrome/browser/ui/webui/chrome_web_ui_ios_controller_factory.mm
index 3488abefda2f61b9fdfcab9ef7d4c53a33667588..cf1df759faae4e85494d69fd4b786429d320797f 100644
--- a/ios/chrome/browser/ui/webui/chrome_web_ui_ios_controller_factory.mm
+++ b/ios/chrome/browser/ui/webui/chrome_web_ui_ios_controller_factory.mm
@@ -6,10 +6,6 @@
 
 #include "base/bind.h"
 #include "base/location.h"
-#include "base/threading/thread_task_runner_handle.h"
-#include "components/favicon/core/favicon_service.h"
-#include "components/favicon_base/favicon_types.h"
-#include "components/favicon_base/select_favicon_frames.h"
 #include "ios/chrome/browser/chrome_url_constants.h"
 #include "ios/chrome/browser/experimental_flags.h"
 #include "ios/chrome/browser/ui/webui/about_ui.h"
@@ -24,7 +20,6 @@
 #include "ios/chrome/browser/ui/webui/signin_internals_ui_ios.h"
 #include "ios/chrome/browser/ui/webui/sync_internals/sync_internals_ui.h"
 #include "ios/chrome/browser/ui/webui/version_ui.h"
-#include "ui/gfx/favicon_size.h"
 #include "url/gurl.h"
 
 using web::WebUIIOS;
@@ -91,23 +86,9 @@ WebUIIOSFactoryFunction GetWebUIIOSFactoryFunction(WebUIIOS* web_ui,
   if (url_host == kChromeUIAppleFlagsHost)
     return &NewWebUIIOS<AppleFlagsUI>;
 
-  // NOTE: It's possible that |url| is a WebUI URL that will be handled by
-  // ChromeWebUIControllerFactory. Once the iOS port is no longer using
-  // ChromeWebUIControllerFactory, there should be a DLOG here noting that
-  // |url| is an unknown WebUI URL.
-
   return nullptr;
 }
 
-void RunFaviconCallbackAsync(
-    const favicon_base::FaviconResultsCallback& callback,
-    const std::vector<favicon_base::FaviconRawBitmapResult>* results) {
-  base::ThreadTaskRunnerHandle::Get()->PostTask(
-      FROM_HERE,
-      base::Bind(&favicon::FaviconService::FaviconResultsCallbackRunner,
-                 callback, base::Owned(results)));
-}
-
 }  // namespace
 
 WebUIIOSController*
@@ -130,67 +111,3 @@ ChromeWebUIIOSControllerFactory::GetInstance() {
 ChromeWebUIIOSControllerFactory::ChromeWebUIIOSControllerFactory() {}
 
 ChromeWebUIIOSControllerFactory::~ChromeWebUIIOSControllerFactory() {}
-
-void ChromeWebUIIOSControllerFactory::GetFaviconForURL(
-    ios::ChromeBrowserState* browser_state,
-    const GURL& page_url,
-    const std::vector<int>& desired_sizes_in_pixel,
-    const favicon_base::FaviconResultsCallback& callback) const {
-  GURL url(page_url);
-
-  std::vector<favicon_base::FaviconRawBitmapResult>* favicon_bitmap_results =
-      new std::vector<favicon_base::FaviconRawBitmapResult>();
-
-  // Use ui::GetSupportedScaleFactors instead of
-  // favicon_base::GetFaviconScales() because chrome favicons comes from
-  // resources.
-  std::vector<ui::ScaleFactor> resource_scale_factors =
-      ui::GetSupportedScaleFactors();
-
-  std::vector<gfx::Size> candidate_sizes;
-  for (size_t i = 0; i < resource_scale_factors.size(); ++i) {
-    float scale = ui::GetScaleForScaleFactor(resource_scale_factors[i]);
-    int candidate_edge_size =
-        static_cast<int>(gfx::kFaviconSize * scale + 0.5f);
-    candidate_sizes.push_back(
-        gfx::Size(candidate_edge_size, candidate_edge_size));
-  }
-  std::vector<size_t> selected_indices;
-  SelectFaviconFrameIndices(candidate_sizes, desired_sizes_in_pixel,
-                            &selected_indices, nullptr);
-  for (size_t i = 0; i < selected_indices.size(); ++i) {
-    size_t selected_index = selected_indices[i];
-    ui::ScaleFactor selected_resource_scale =
-        resource_scale_factors[selected_index];
-
-    scoped_refptr<base::RefCountedMemory> bitmap(
-        GetFaviconResourceBytes(url, selected_resource_scale));
-    if (bitmap.get() && bitmap->size()) {
-      favicon_base::FaviconRawBitmapResult bitmap_result;
-      bitmap_result.bitmap_data = bitmap;
-      // Leave |bitmap_result|'s icon URL as the default of GURL().
-      bitmap_result.icon_type = favicon_base::FAVICON;
-      bitmap_result.pixel_size = candidate_sizes[selected_index];
-      favicon_bitmap_results->push_back(bitmap_result);
-    }
-  }
-
-  RunFaviconCallbackAsync(callback, favicon_bitmap_results);
-}
-
-base::RefCountedMemory*
-ChromeWebUIIOSControllerFactory::GetFaviconResourceBytes(
-    const GURL& page_url,
-    ui::ScaleFactor scale_factor) const {
-  if (!page_url.SchemeIs(kChromeUIScheme))
-    return nullptr;
-
-  if (page_url.host_piece() == kChromeUICrashesHost)
-    return CrashesUI::GetFaviconResourceBytes(scale_factor);
-  if (page_url.host_piece() == kChromeUIFlagsHost)
-    return FlagsUI::GetFaviconResourceBytes(scale_factor);
-  if (page_url.host_piece() == kChromeUIAppleFlagsHost)
-    return AppleFlagsUI::GetFaviconResourceBytes(scale_factor);
-
-  return nullptr;
-}