Update to Chromium revision cb947c01 (#352221)

- Implement CefRequestHandler::OnBeforeBrowse using NavigationThrottle
  instead of ResourceThrottle (see http://crbug.com/537634). The CefRequest
  object passed to OnBeforeBrowse will no longer have an associated request
  identifier.
- Mac: Remove additional helper apps which are no longer required (see
  http://crbug.com/520680)
- Remove the UR_FLAG_REPORT_RAW_HEADERS flag which is no longer supported (see
  http://crbug.com/517114)
- Remove the CefBrowserSettings.java parameter. Java is an NPAPI plugin and
  NPAPI plugins are no longer supported (see http://crbug.com/470301#c11)
- Add CefFormatUrlForSecurityDisplay function in cef_parser.h
- Fix crash when passing `--disable-extensions` command-line flag (issue #1721)
- Linux: Fix NSS handler loading (issue #1727)

patch/patches/browser_web_contents_1257.patch

@@ -1,9 +1,9 @@
 diff --git web_contents_impl.cc web_contents_impl.cc
-index f7505af..ef9ff79 100644
+index 7c84d90..2aaace4 100644
 --- web_contents_impl.cc
 +++ web_contents_impl.cc
-@@ -1351,23 +1351,30 @@ void WebContentsImpl::Init(const WebContents::CreateParams& params) {
-       params.main_frame_routing_id);
+@@ -1353,23 +1353,30 @@ void WebContentsImpl::Init(const WebContents::CreateParams& params) {
+                            MSG_ROUTING_NONE);
    frame_tree_.root()->SetFrameName(params.main_frame_name);
  
 -  WebContentsViewDelegate* delegate =
@@ -50,7 +50,7 @@ index f7505af..ef9ff79 100644
    }
    CHECK(render_view_host_delegate_view_);
    CHECK(view_.get());
-@@ -1705,6 +1712,9 @@ void WebContentsImpl::CreateNewWindow(
+@@ -1715,6 +1722,9 @@ void WebContentsImpl::CreateNewWindow(
        static_cast<SessionStorageNamespaceImpl*>(session_storage_namespace);
    CHECK(session_storage_namespace_impl->IsFromContext(dom_storage_context));
  
@@ -60,7 +60,7 @@ index f7505af..ef9ff79 100644
    if (delegate_ &&
        !delegate_->ShouldCreateWebContents(this,
                                            route_id,
-@@ -1713,7 +1723,9 @@ void WebContentsImpl::CreateNewWindow(
+@@ -1723,7 +1733,9 @@ void WebContentsImpl::CreateNewWindow(
                                            params.frame_name,
                                            params.target_url,
                                            partition_id,
@@ -71,7 +71,7 @@ index f7505af..ef9ff79 100644
      if (route_id != MSG_ROUTING_NONE &&
          !RenderViewHost::FromID(render_process_id, route_id)) {
        // If the embedder didn't create a WebContents for this route, we need to
-@@ -1735,6 +1747,8 @@ void WebContentsImpl::CreateNewWindow(
+@@ -1745,6 +1757,8 @@ void WebContentsImpl::CreateNewWindow(
    create_params.opener_render_process_id = render_process_id;
    create_params.opener_render_frame_id = params.opener_render_frame_id;
    create_params.opener_suppressed = params.opener_suppressed;