diff --git a/ceee/ie/common/chrome_frame_host.cc b/ceee/ie/common/chrome_frame_host.cc
index 66e8efcbf804d5..dc5362aa99cd59 100644
--- a/ceee/ie/common/chrome_frame_host.cc
+++ b/ceee/ie/common/chrome_frame_host.cc
@@ -61,17 +61,6 @@ STDMETHODIMP ChromeFrameHost::GetWantsPrivileged(boolean* wants_privileged) {
   return S_OK;
 }
 
-STDMETHODIMP ChromeFrameHost::GetChromeExtraArguments(BSTR* args) {
-  DCHECK(args);
-
-  // Extra arguments are passed on verbatim, so we add the -- prefix.
-  CComBSTR str = "--";
-  str.Append(switches::kEnableExperimentalExtensionApis);
-
-  *args = str.Detach();
-  return S_OK;
-}
-
 STDMETHODIMP ChromeFrameHost::GetChromeProfileName(BSTR* profile_name) {
   return chrome_profile_name_.CopyTo(profile_name);
 }
diff --git a/ceee/ie/common/chrome_frame_host.h b/ceee/ie/common/chrome_frame_host.h
index b04b7b5a9b34f8..4703e7148494f2 100644
--- a/ceee/ie/common/chrome_frame_host.h
+++ b/ceee/ie/common/chrome_frame_host.h
@@ -140,7 +140,6 @@ class ATL_NO_VTABLE ChromeFrameHost
   // @name IChromeFramePrivileged implementation.
   // @{
   STDMETHOD(GetWantsPrivileged)(boolean* wants_privileged);
-  STDMETHOD(GetChromeExtraArguments)(BSTR* args);
   STDMETHOD(GetChromeProfileName)(BSTR* args);
   STDMETHOD(GetExtensionApisToAutomate)(BSTR* functions_enabled);
   STDMETHOD(ShouldShowVersionMismatchDialog)();
diff --git a/ceee/ie/plugin/bho/infobar_browser_window.cc b/ceee/ie/plugin/bho/infobar_browser_window.cc
index 8a332e405bd3ce..c5de414615121d 100644
--- a/ceee/ie/plugin/bho/infobar_browser_window.cc
+++ b/ceee/ie/plugin/bho/infobar_browser_window.cc
@@ -39,19 +39,6 @@ STDMETHODIMP InfobarBrowserWindow::GetWantsPrivileged(
   return S_OK;
 }
 
-STDMETHODIMP InfobarBrowserWindow::GetChromeExtraArguments(BSTR* args) {
-  DCHECK(args);
-
-  // Must enable experimental extensions because we want to load html pages
-  // from our extension.
-  // Extra arguments are passed on verbatim, so we add the -- prefix.
-  CComBSTR str = "--";
-  str.Append(switches::kEnableExperimentalExtensionApis);
-
-  *args = str.Detach();
-  return S_OK;
-}
-
 STDMETHODIMP InfobarBrowserWindow::GetChromeProfileName(BSTR* profile_name) {
   *profile_name = ::SysAllocString(
       ceee_module_util::GetBrokerProfileNameForIe());
diff --git a/ceee/ie/plugin/bho/infobar_browser_window.h b/ceee/ie/plugin/bho/infobar_browser_window.h
index 9c4b39fe1209d3..fa4d8a78f19ad3 100644
--- a/ceee/ie/plugin/bho/infobar_browser_window.h
+++ b/ceee/ie/plugin/bho/infobar_browser_window.h
@@ -102,7 +102,6 @@ class ATL_NO_VTABLE InfobarBrowserWindow
   // @name IChromeFramePrivileged implementation.
   // @{
   STDMETHOD(GetWantsPrivileged)(boolean *wants_privileged);
-  STDMETHOD(GetChromeExtraArguments)(BSTR *args);
   STDMETHOD(GetChromeProfileName)(BSTR *args);
   STDMETHOD(GetExtensionApisToAutomate)(BSTR *args);
   STDMETHOD(ShouldShowVersionMismatchDialog)();
diff --git a/ceee/ie/plugin/toolband/tool_band.cc b/ceee/ie/plugin/toolband/tool_band.cc
index 89e8be1f0a9072..d30c9a2d7840b9 100644
--- a/ceee/ie/plugin/toolband/tool_band.cc
+++ b/ceee/ie/plugin/toolband/tool_band.cc
@@ -213,17 +213,6 @@ STDMETHODIMP ToolBand::GetWantsPrivileged(boolean* wants_privileged) {
   return S_OK;
 }
 
-STDMETHODIMP ToolBand::GetChromeExtraArguments(BSTR* args) {
-  DCHECK(args);
-
-  // Extra arguments are passed on verbatim, so we add the -- prefix.
-  CComBSTR str = "--";
-  str.Append(switches::kEnableExperimentalExtensionApis);
-
-  *args = str.Detach();
-  return S_OK;
-}
-
 STDMETHODIMP ToolBand::GetChromeProfileName(BSTR* profile_name) {
   *profile_name = ::SysAllocString(
       ceee_module_util::GetBrokerProfileNameForIe());
diff --git a/ceee/ie/plugin/toolband/tool_band.h b/ceee/ie/plugin/toolband/tool_band.h
index 1fbe73fe7e04ce..08ae691f321dcc 100644
--- a/ceee/ie/plugin/toolband/tool_band.h
+++ b/ceee/ie/plugin/toolband/tool_band.h
@@ -137,7 +137,6 @@ class ATL_NO_VTABLE ToolBand : public CComObjectRootEx<CComSingleThreadModel>,
   // @name IChromeFramePrivileged implementation.
   // @{
   STDMETHOD(GetWantsPrivileged)(boolean *wants_privileged);
-  STDMETHOD(GetChromeExtraArguments)(BSTR *args);
   STDMETHOD(GetChromeProfileName)(BSTR *args);
   STDMETHOD(GetExtensionApisToAutomate)(BSTR *args);
   STDMETHOD(ShouldShowVersionMismatchDialog)();
diff --git a/chrome_frame/chrome_frame.gyp b/chrome_frame/chrome_frame.gyp
index 0cfe8959454198..e8b334a70a5495 100644
--- a/chrome_frame/chrome_frame.gyp
+++ b/chrome_frame/chrome_frame.gyp
@@ -335,7 +335,7 @@
             },
           },
           'dependencies': [
-	        '../chrome/chrome.gyp:crash_service',
+            '../chrome/chrome.gyp:crash_service',
             '../chrome/chrome.gyp:automation',
             '../chrome/chrome.gyp:installer_util',
             '../google_update/google_update.gyp:google_update',
@@ -429,7 +429,7 @@
           'dependencies': [
             '../breakpad/breakpad.gyp:breakpad_handler',
             '../chrome/chrome.gyp:automation',
-	        '../chrome/chrome.gyp:crash_service',
+            '../chrome/chrome.gyp:crash_service',
             '../chrome/chrome.gyp:installer_util',
             '../google_update/google_update.gyp:google_update',
           ],
@@ -497,7 +497,7 @@
           'dependencies': [
             '../breakpad/breakpad.gyp:breakpad_handler',
             '../chrome/chrome.gyp:automation',
-	        '../chrome/chrome.gyp:crash_service',
+            '../chrome/chrome.gyp:crash_service',
             '../chrome/chrome.gyp:chrome_dll_version',
             '../chrome/chrome.gyp:installer_util',
             '../google_update/google_update.gyp:google_update',
@@ -808,7 +808,8 @@
             '/c', '<(RULE_INPUT_PATH)',
           ],
           'process_outputs_as_sources': 0,
-          'message': 'Assembling <(RULE_INPUT_PATH) to <(INTERMEDIATE_DIR)\<(RULE_INPUT_ROOT).obj.',
+          'message':
+              'Assembling <(RULE_INPUT_PATH) to <(INTERMEDIATE_DIR)\<(RULE_INPUT_ROOT).obj.',
         },
       ],
       'msvs_settings': {
@@ -886,6 +887,8 @@
         'resource.h',
       ],
       'include_dirs': [
+        # For chrome_tab.h
+        '<(SHARED_INTERMEDIATE_DIR)',
         '<(INTERMEDIATE_DIR)/../npchrome_frame',
       ],
       'conditions': [
diff --git a/chrome_frame/chrome_frame_activex.cc b/chrome_frame/chrome_frame_activex.cc
index 60855462408e8d..7d3f5eb760574e 100644
--- a/chrome_frame/chrome_frame_activex.cc
+++ b/chrome_frame/chrome_frame_activex.cc
@@ -453,16 +453,8 @@ HRESULT ChromeFrameActivex::IOleObject_SetClientSite(
       url_fetcher_->set_privileged_mode(is_privileged_);
     }
 
-    std::wstring chrome_extra_arguments;
     std::wstring profile_name(GetHostProcessName(false));
     if (is_privileged_) {
-      // Does the host want to provide extra arguments?
-      base::win::ScopedBstr extra_arguments_arg;
-      service_hr = service->GetChromeExtraArguments(
-          extra_arguments_arg.Receive());
-      if (S_OK == service_hr && extra_arguments_arg)
-        chrome_extra_arguments.assign(extra_arguments_arg,
-                                      extra_arguments_arg.Length());
 
       base::win::ScopedBstr automated_functions_arg;
       service_hr = service->GetExtensionApisToAutomate(
@@ -490,6 +482,15 @@ HRESULT ChromeFrameActivex::IOleObject_SetClientSite(
 
     InitializeAutomationSettings();
 
+    // To avoid http://code.google.com/p/chromium/issues/detail?id=63427,
+    // we always pass this flag needed by CEEE. It has no effect on
+    // normal CF operation.
+    //
+    // Extra arguments are passed on verbatim, so we add the -- prefix.
+    std::wstring chrome_extra_arguments(L"--");
+    chrome_extra_arguments.append(
+        ASCIIToWide(switches::kEnableExperimentalExtensionApis));
+
     url_fetcher_->set_frame_busting(!is_privileged_);
     automation_client_->SetUrlFetcher(url_fetcher_.get());
     if (!InitializeAutomation(profile_name, chrome_extra_arguments,
diff --git a/chrome_frame/chrome_tab.idl b/chrome_frame/chrome_tab.idl
index 5894e3fd183a5b..3ec0236682a62f 100644
--- a/chrome_frame/chrome_tab.idl
+++ b/chrome_frame/chrome_tab.idl
@@ -84,10 +84,10 @@ interface IChromeFrame : IDispatch {
 };
 
 [
-  object,
+  object,
   uuid(851bedec-4b2c-4959-abc0-a53403117257),
-  local,  // This interface should never be marshaled.
-  hidden,
+  local,  // This interface should never be marshaled.
+  hidden,
 ]
 // Internal implementation interface. Not intended as an API. May change
 // frequently, don't treat this as frozen.
@@ -98,18 +98,17 @@ interface IChromeFrameInternal : IUnknown {
 
 [
   object,
-  uuid(8AD52429-3CE0-4883-BC69-2DFA055D20D4),
+  uuid(B1B52A4D-B22E-489f-8CCD-1CF9166FA90E),
   oleautomation,
   nonextensible,
   hidden,
 ]
+// Internal implementation interface. Not intended as an API. May change
+// frequently, don't treat this as frozen.
 interface IChromeFramePrivileged : IUnknown {
   // If the host returns false for wants_privileged, the control
   // won't enable privileged mode.
   HRESULT GetWantsPrivileged([out] boolean *wants_privileged);
-  // Extra arguments to supply to the Chrome instance.  Returns S_FALSE when
-  // no extra arguments are needed.  Always sets the output string to non-NULL.
-  HRESULT GetChromeExtraArguments([out] BSTR *args);
   // The profile name we want to use.
   HRESULT GetChromeProfileName([out] BSTR *profile_name);
   // The comma-separated list of extension API functions you wish to automate.