diff --git a/CHROMIUM_BUILD_COMPATIBILITY.txt b/CHROMIUM_BUILD_COMPATIBILITY.txt
index fe55a6ab8..43decbeaa 100644
--- a/CHROMIUM_BUILD_COMPATIBILITY.txt
+++ b/CHROMIUM_BUILD_COMPATIBILITY.txt
@@ -7,5 +7,5 @@
 # https://bitbucket.org/chromiumembedded/cef/wiki/BranchesAndBuilding
 
 {
-  'chromium_checkout': 'refs/tags/54.0.2840.6',
+  'chromium_checkout': 'refs/tags/54.0.2840.16',
 }
diff --git a/patch/patch.cfg b/patch/patch.cfg
index a5c0e7221..a05e12911 100644
--- a/patch/patch.cfg
+++ b/patch/patch.cfg
@@ -256,10 +256,4 @@ patches = [
     'name': 'storage_partition_1973',
     'path': '../',
   },
-  {
-    # Fix debug assertion on right-click context menu.
-    # https://codereview.chromium.org/2288083002
-    'name': 'webkit_eventhandler_2288083002',
-    'path': '../',
-  },
 ]
diff --git a/patch/patches/chrome_widevine.patch b/patch/patches/chrome_widevine.patch
index a437e7c72..a1d2b4c5e 100644
--- a/patch/patches/chrome_widevine.patch
+++ b/patch/patches/chrome_widevine.patch
@@ -1,8 +1,8 @@
 diff --git chrome/common/chrome_content_client.cc chrome/common/chrome_content_client.cc
-index 4325cec..7cb8a86 100644
+index 483c3c8..86cd70c 100644
 --- chrome/common/chrome_content_client.cc
 +++ chrome/common/chrome_content_client.cc
-@@ -76,7 +76,7 @@
+@@ -77,7 +77,7 @@
  #endif
  
  #if defined(WIDEVINE_CDM_AVAILABLE) && defined(ENABLE_PEPPER_CDMS) && \
diff --git a/patch/patches/content_nav_1129.patch b/patch/patches/content_nav_1129.patch
index 0dafb6945..74000f10d 100644
--- a/patch/patches/content_nav_1129.patch
+++ b/patch/patches/content_nav_1129.patch
@@ -39,10 +39,10 @@ index b7b042f..69a62f2 100644
    // built in media player for the given |url|. Defaults to false.
    virtual bool ShouldUseMediaPlayerForURL(const GURL& url);
 diff --git renderer/render_frame_impl.cc renderer/render_frame_impl.cc
-index 95165ff..608409e 100644
+index 4a2c71f..fc61d73 100644
 --- renderer/render_frame_impl.cc
 +++ renderer/render_frame_impl.cc
-@@ -4917,7 +4917,6 @@ WebNavigationPolicy RenderFrameImpl::decidePolicyForNavigation(
+@@ -4924,7 +4924,6 @@ WebNavigationPolicy RenderFrameImpl::decidePolicyForNavigation(
        (pending_navigation_params_ &&
         !pending_navigation_params_->request_params.redirects.empty());
  
@@ -50,7 +50,7 @@ index 95165ff..608409e 100644
    // The handlenavigation API is deprecated and will be removed once
    // crbug.com/325351 is resolved.
    if (GetContentClient()->renderer()->HandleNavigation(
-@@ -4926,7 +4925,6 @@ WebNavigationPolicy RenderFrameImpl::decidePolicyForNavigation(
+@@ -4933,7 +4932,6 @@ WebNavigationPolicy RenderFrameImpl::decidePolicyForNavigation(
            is_redirect)) {
      return blink::WebNavigationPolicyIgnore;
    }
diff --git a/patch/patches/print_header_footer_1478_1565.patch b/patch/patches/print_header_footer_1478_1565.patch
index 69316493a..78ad8ad52 100644
--- a/patch/patches/print_header_footer_1478_1565.patch
+++ b/patch/patches/print_header_footer_1478_1565.patch
@@ -166,7 +166,7 @@ index a019144..af8839d 100644
                      PrintHostMsg_SetOptionsFromDocument_Params /* params */)
 -#endif  // defined(ENABLE_PRINT_PREVIEW)
 diff --git components/printing/renderer/print_web_view_helper.cc components/printing/renderer/print_web_view_helper.cc
-index 22207f3..5924464 100644
+index 7fa310f..8946ba9 100644
 --- components/printing/renderer/print_web_view_helper.cc
 +++ components/printing/renderer/print_web_view_helper.cc
 @@ -86,6 +86,9 @@ const float kPrintingMinimumShrinkFactor = 1.333f;
@@ -205,7 +205,7 @@ index 22207f3..5924464 100644
  
  // Disable scaling when either:
  // - The PDF specifies disabling scaling.
-@@ -371,7 +369,6 @@ MarginType GetMarginsForPdf(blink::WebLocalFrame* frame,
+@@ -378,7 +376,6 @@ MarginType GetMarginsForPdf(blink::WebLocalFrame* frame,
  }
  #endif
  
@@ -213,7 +213,7 @@ index 22207f3..5924464 100644
  bool FitToPageEnabled(const base::DictionaryValue& job_settings) {
    bool fit_to_paper_size = false;
    if (!job_settings.GetBoolean(kSettingFitToPageEnabled, &fit_to_paper_size)) {
-@@ -413,7 +410,6 @@ blink::WebPrintScalingOption GetPrintScalingOption(
+@@ -421,7 +418,6 @@ blink::WebPrintScalingOption GetPrintScalingOption(
    }
    return blink::WebPrintScalingOptionFitToPrintableArea;
  }
@@ -221,7 +221,7 @@ index 22207f3..5924464 100644
  
  PrintMsg_Print_Params CalculatePrintParamsForCss(
      blink::WebLocalFrame* frame,
-@@ -497,7 +493,6 @@ blink::WebView* FrameReference::view() {
+@@ -505,7 +501,6 @@ blink::WebView* FrameReference::view() {
    return view_;
  }
  
@@ -229,7 +229,7 @@ index 22207f3..5924464 100644
  // static - Not anonymous so that platform implementations can use it.
  void PrintWebViewHelper::PrintHeaderAndFooter(
      blink::WebCanvas* canvas,
-@@ -557,7 +552,6 @@ void PrintWebViewHelper::PrintHeaderAndFooter(
+@@ -565,7 +560,6 @@ void PrintWebViewHelper::PrintHeaderAndFooter(
    web_view->close();
    frame->close();
  }
@@ -237,7 +237,7 @@ index 22207f3..5924464 100644
  
  // static - Not anonymous so that platform implementations can use it.
  float PrintWebViewHelper::RenderPageContent(blink::WebFrame* frame,
-@@ -843,6 +837,7 @@ PrintWebViewHelper::PrintWebViewHelper(content::RenderView* render_view,
+@@ -851,6 +845,7 @@ PrintWebViewHelper::PrintWebViewHelper(content::RenderView* render_view,
        print_for_preview_(false),
        delegate_(std::move(delegate)),
        print_node_in_progress_(false),
@@ -245,7 +245,7 @@ index 22207f3..5924464 100644
        is_loading_(false),
        is_scripted_preview_delayed_(false),
        ipc_nesting_level_(0),
-@@ -901,10 +896,8 @@ void PrintWebViewHelper::PrintPage(blink::WebLocalFrame* frame,
+@@ -909,10 +904,8 @@ void PrintWebViewHelper::PrintPage(blink::WebLocalFrame* frame,
      return;
  
    if (g_is_preview_enabled) {
@@ -256,7 +256,7 @@ index 22207f3..5924464 100644
    } else {
  #if defined(ENABLE_BASIC_PRINTING)
      Print(frame, blink::WebNode(), true);
-@@ -928,14 +921,10 @@ bool PrintWebViewHelper::OnMessageReceived(const IPC::Message& message) {
+@@ -936,14 +929,10 @@ bool PrintWebViewHelper::OnMessageReceived(const IPC::Message& message) {
      IPC_MESSAGE_HANDLER(PrintMsg_PrintPages, OnPrintPages)
      IPC_MESSAGE_HANDLER(PrintMsg_PrintForSystemDialog, OnPrintForSystemDialog)
  #endif  // defined(ENABLE_BASIC_PRINTING)
@@ -271,7 +271,7 @@ index 22207f3..5924464 100644
      IPC_MESSAGE_HANDLER(PrintMsg_SetScriptedPrintingBlocked,
                          SetScriptedPrintBlocked)
      IPC_MESSAGE_UNHANDLED(handled = false)
-@@ -990,7 +979,6 @@ void PrintWebViewHelper::OnPrintForSystemDialog() {
+@@ -998,7 +987,6 @@ void PrintWebViewHelper::OnPrintForSystemDialog() {
  }
  #endif  // defined(ENABLE_BASIC_PRINTING)
  
@@ -279,7 +279,7 @@ index 22207f3..5924464 100644
  void PrintWebViewHelper::OnPrintForPrintPreview(
      const base::DictionaryValue& job_settings) {
    CHECK_LE(ipc_nesting_level_, 1);
-@@ -1055,7 +1043,6 @@ void PrintWebViewHelper::OnPrintForPrintPreview(
+@@ -1063,7 +1051,6 @@ void PrintWebViewHelper::OnPrintForPrintPreview(
      DidFinishPrinting(FAIL_PRINT);
    }
  }
@@ -287,7 +287,7 @@ index 22207f3..5924464 100644
  
  void PrintWebViewHelper::GetPageSizeAndContentAreaFromPageLayout(
      const PageSizeMargins& page_layout_in_points,
-@@ -1080,7 +1067,6 @@ void PrintWebViewHelper::UpdateFrameMarginsCssInfo(
+@@ -1088,7 +1075,6 @@ void PrintWebViewHelper::UpdateFrameMarginsCssInfo(
    ignore_css_margins_ = (margins_type != DEFAULT_MARGINS);
  }
  
@@ -295,7 +295,7 @@ index 22207f3..5924464 100644
  void PrintWebViewHelper::OnPrintPreview(const base::DictionaryValue& settings) {
    if (ipc_nesting_level_ > 1)
      return;
-@@ -1241,7 +1227,7 @@ bool PrintWebViewHelper::CreatePreviewDocument() {
+@@ -1249,7 +1235,7 @@ bool PrintWebViewHelper::CreatePreviewDocument() {
    return true;
  }
  
@@ -304,7 +304,7 @@ index 22207f3..5924464 100644
  bool PrintWebViewHelper::RenderPreviewPage(
      int page_number,
      const PrintMsg_Print_Params& print_params) {
-@@ -1271,7 +1257,7 @@ bool PrintWebViewHelper::RenderPreviewPage(
+@@ -1279,7 +1265,7 @@ bool PrintWebViewHelper::RenderPreviewPage(
    }
    return PreviewPageRendered(page_number, draft_metafile.get());
  }
@@ -313,7 +313,7 @@ index 22207f3..5924464 100644
  
  bool PrintWebViewHelper::FinalizePrintReadyDocument() {
    DCHECK(!is_print_ready_metafile_sent_);
-@@ -1301,7 +1287,6 @@ bool PrintWebViewHelper::FinalizePrintReadyDocument() {
+@@ -1309,7 +1295,6 @@ bool PrintWebViewHelper::FinalizePrintReadyDocument() {
    Send(new PrintHostMsg_MetafileReadyForPrinting(routing_id(), preview_params));
    return true;
  }
@@ -321,7 +321,7 @@ index 22207f3..5924464 100644
  
  void PrintWebViewHelper::OnPrintingDone(bool success) {
    if (ipc_nesting_level_ > 1)
-@@ -1316,7 +1301,6 @@ void PrintWebViewHelper::SetScriptedPrintBlocked(bool blocked) {
+@@ -1324,7 +1309,6 @@ void PrintWebViewHelper::SetScriptedPrintBlocked(bool blocked) {
    is_scripted_printing_blocked_ = blocked;
  }
  
@@ -329,7 +329,7 @@ index 22207f3..5924464 100644
  void PrintWebViewHelper::OnInitiatePrintPreview(bool selection_only) {
    if (ipc_nesting_level_ > 1)
      return;
-@@ -1327,7 +1311,9 @@ void PrintWebViewHelper::OnInitiatePrintPreview(bool selection_only) {
+@@ -1335,7 +1319,9 @@ void PrintWebViewHelper::OnInitiatePrintPreview(bool selection_only) {
    // that instead.
    auto plugin = delegate_->GetPdfElement(frame);
    if (!plugin.isNull()) {
@@ -339,7 +339,7 @@ index 22207f3..5924464 100644
      return;
    }
    print_preview_context_.InitWithFrame(frame);
-@@ -1335,7 +1321,6 @@ void PrintWebViewHelper::OnInitiatePrintPreview(bool selection_only) {
+@@ -1343,7 +1329,6 @@ void PrintWebViewHelper::OnInitiatePrintPreview(bool selection_only) {
                            ? PRINT_PREVIEW_USER_INITIATED_SELECTION
                            : PRINT_PREVIEW_USER_INITIATED_ENTIRE_FRAME);
  }
@@ -347,7 +347,7 @@ index 22207f3..5924464 100644
  
  bool PrintWebViewHelper::IsPrintingEnabled() {
    bool result = false;
-@@ -1361,11 +1346,9 @@ void PrintWebViewHelper::PrintNode(const blink::WebNode& node) {
+@@ -1369,11 +1354,9 @@ void PrintWebViewHelper::PrintNode(const blink::WebNode& node) {
  
    // Make a copy of the node, in case RenderView::OnContextMenuClosed resets
    // its |context_menu_node_|.
@@ -360,7 +360,7 @@ index 22207f3..5924464 100644
    } else {
  #if defined(ENABLE_BASIC_PRINTING)
      blink::WebNode duplicate_node(node);
-@@ -1431,7 +1414,6 @@ void PrintWebViewHelper::DidFinishPrinting(PrintingResult result) {
+@@ -1439,7 +1422,6 @@ void PrintWebViewHelper::DidFinishPrinting(PrintingResult result) {
        }
        break;
  
@@ -368,7 +368,7 @@ index 22207f3..5924464 100644
      case FAIL_PREVIEW:
        int cookie =
            print_pages_params_ ? print_pages_params_->params.document_cookie : 0;
-@@ -1443,7 +1425,6 @@ void PrintWebViewHelper::DidFinishPrinting(PrintingResult result) {
+@@ -1451,7 +1433,6 @@ void PrintWebViewHelper::DidFinishPrinting(PrintingResult result) {
        }
        print_preview_context_.Failed(notify_browser_of_print_failure_);
        break;
@@ -376,7 +376,7 @@ index 22207f3..5924464 100644
    }
    prep_frame_view_.reset();
    print_pages_params_.reset();
-@@ -1575,7 +1556,6 @@ bool PrintWebViewHelper::CalculateNumberOfPages(blink::WebLocalFrame* frame,
+@@ -1583,7 +1564,6 @@ bool PrintWebViewHelper::CalculateNumberOfPages(blink::WebLocalFrame* frame,
    return true;
  }
  
@@ -384,7 +384,7 @@ index 22207f3..5924464 100644
  bool PrintWebViewHelper::SetOptionsFromPdfDocument(
      PrintHostMsg_SetOptionsFromDocument_Params* options) {
    blink::WebLocalFrame* source_frame = print_preview_context_.source_frame();
-@@ -1684,7 +1664,6 @@ bool PrintWebViewHelper::UpdatePrintSettings(
+@@ -1692,7 +1672,6 @@ bool PrintWebViewHelper::UpdatePrintSettings(
  
    return true;
  }
@@ -392,7 +392,7 @@ index 22207f3..5924464 100644
  
  #if defined(ENABLE_BASIC_PRINTING)
  bool PrintWebViewHelper::GetPrintSettingsFromUser(blink::WebLocalFrame* frame,
-@@ -1793,7 +1772,6 @@ void PrintWebViewHelper::PrintPageInternal(
+@@ -1801,7 +1780,6 @@ void PrintWebViewHelper::PrintPageInternal(
  
    MetafileSkiaWrapper::SetMetafileOnCanvas(*canvas, metafile);
  
@@ -400,7 +400,7 @@ index 22207f3..5924464 100644
    if (params.params.display_header_footer) {
      // TODO(thestig): Figure out why Linux needs this. It is almost certainly
      // |printingMinimumShrinkFactor| from Blink.
-@@ -1808,7 +1786,6 @@ void PrintWebViewHelper::PrintPageInternal(
+@@ -1816,7 +1794,6 @@ void PrintWebViewHelper::PrintPageInternal(
                           scale_factor / fudge_factor, page_layout_in_points,
                           params.params);
    }
@@ -408,7 +408,7 @@ index 22207f3..5924464 100644
  
    float webkit_scale_factor =
        RenderPageContent(frame, params.page_number, canvas_area, content_area,
-@@ -1844,7 +1821,6 @@ bool PrintWebViewHelper::CopyMetafileDataToSharedMem(
+@@ -1852,7 +1829,6 @@ bool PrintWebViewHelper::CopyMetafileDataToSharedMem(
    return true;
  }
  
@@ -416,7 +416,7 @@ index 22207f3..5924464 100644
  void PrintWebViewHelper::ShowScriptedPrintPreview() {
    if (is_scripted_preview_delayed_) {
      is_scripted_preview_delayed_ = false;
-@@ -1972,7 +1948,6 @@ bool PrintWebViewHelper::PreviewPageRendered(int page_number,
+@@ -1980,7 +1956,6 @@ bool PrintWebViewHelper::PreviewPageRendered(int page_number,
    Send(new PrintHostMsg_DidPreviewPage(routing_id(), preview_page_params));
    return true;
  }
diff --git a/patch/patches/render_widget_host_1070383005.patch b/patch/patches/render_widget_host_1070383005.patch
index 55cd97c22..0a7f83964 100644
--- a/patch/patches/render_widget_host_1070383005.patch
+++ b/patch/patches/render_widget_host_1070383005.patch
@@ -1,5 +1,5 @@
 diff --git render_widget_host_view_mac.mm render_widget_host_view_mac.mm
-index ecfcc9c..6bb0eda 100644
+index f918d13..4a242e8 100644
 --- render_widget_host_view_mac.mm
 +++ render_widget_host_view_mac.mm
 @@ -467,9 +467,6 @@ RenderWidgetHostViewMac::RenderWidgetHostViewMac(RenderWidgetHost* widget,
diff --git a/patch/patches/web_contents_1257.patch b/patch/patches/web_contents_1257.patch
index 2cb3174cb..6a6efe23d 100644
--- a/patch/patches/web_contents_1257.patch
+++ b/patch/patches/web_contents_1257.patch
@@ -74,7 +74,7 @@ index 693e84d..be1f1dd 100644
                            int opener_render_frame_id,
                            const std::string& frame_name,
 diff --git content/browser/web_contents/web_contents_impl.cc content/browser/web_contents/web_contents_impl.cc
-index 51f3bba..dead593 100644
+index 05801d4..04c86da 100644
 --- content/browser/web_contents/web_contents_impl.cc
 +++ content/browser/web_contents/web_contents_impl.cc
 @@ -1543,6 +1543,12 @@ void WebContentsImpl::Init(const WebContents::CreateParams& params) {
diff --git a/patch/patches/webkit_eventhandler_2288083002.patch b/patch/patches/webkit_eventhandler_2288083002.patch
deleted file mode 100644
index 020972a6f..000000000
--- a/patch/patches/webkit_eventhandler_2288083002.patch
+++ /dev/null
@@ -1,15 +0,0 @@
-diff --git third_party/WebKit/Source/core/input/EventHandler.cpp third_party/WebKit/Source/core/input/EventHandler.cpp
-index 9c49350..aa5e6a9 100644
---- third_party/WebKit/Source/core/input/EventHandler.cpp
-+++ third_party/WebKit/Source/core/input/EventHandler.cpp
-@@ -2039,6 +2039,10 @@ WebInputEventResult EventHandler::sendContextMenuEvent(const PlatformMouseEvent&
-     LayoutPoint positionInContents = v->rootFrameToContents(event.position());
-     HitTestRequest request(HitTestRequest::Active);
-     MouseEventWithHitTestResults mev = m_frame->document()->prepareMouseEvent(request, positionInContents, event);
-+    // Since |Document::prepareMouseEvent()| modifies layout tree for setting
-+    // hover element, we need to update layout tree for requirement of
-+    // |SelectionController::sendContextMenuEvent()|.
-+    m_frame->document()->updateStyleAndLayoutIgnorePendingStylesheets();
- 
-     selectionController().sendContextMenuEvent(mev, positionInContents);
-