The PDF extension will send Range requests when loading large PDF files. For
these cross-origin requests to be allowed (from extension origin to PDF origin)
the CORB checks in URLLoader must be disabled.
This restores the behavior prior to revision 438382c. Calling
InitializeSandboxInfo from inside libcef won’t work unless libcef is
statically linked with the executable, so there's no point in doing so.
See the Chromium sandbox docs for background.
If a cache_path is specified local_state will now be persisted to a
LocalPrefs.json file. This is necessary because local_state is used to store
the cookie encryption key on Windows.
With this change CefCookieManagerImpl no longer keeps a reference to the
originating CefRequestContextImpl. This means that the CefRequestContextImpl
can be destroyed if all other references are released while the
CefCookieManagerImpl exists. If CefRequestContextImpl destruction results in
the underlying CefBrowserContext being destroyed then the CefCookieManagerImpl's
reference to that CefBrowserContext will be invalidated.
This is the same ownership model introduced with CefMediaRouterImpl in the
previous commit.
Chromium supports communication with media devices on the local network via
the Cast and DIAL protocols. This takes two primary forms:
1. Messaging, where strings representing state information are passed between
the client and a dedicated receiver app on the media device. The receiver
app communicates directly with an app-specific backend service to retrieve
and possibly control media playback.
2. Tab/desktop mirroring, where the media contents are streamed directly from
the browser to a generic streaming app on the media device and playback is
controlled by the browser.
This change adds support for device discovery and messaging (but not
mirroring) with functionality exposed via the new CefMediaRouter interface.
To test: Navigate to http://tests/media_router in cefclient and follow the
on-screen instructions.
This includes the following changes:
- Update usage of surface IDs to match the Aura implementation from the
RWHVAura/Window classes.
- Batch CefBrowserHost::WasResized calls to avoid excessive/unnecessary calls
to SynchronizeVisualProperties.
- Cache the results of CefRenderHandler::GetViewRect after resize and make
RWHVOSR::GetViewBounds the source of truth for all size calculations.
- Fix bounds calculations in CefVideoConsumerOSR with GPU enabled.
Known issues:
- The size passed to OnPaint may be off by 1 pixel in cases where the device
scale factor is not 1 and does not divide evenly into the pixel size. This is
due to the inexact conversion from integer pixel size to integer logical size
for GetViewRect.
Call DesktopWindowTreeHostPlatform::Close after destroying CEF's X11 window
so that objects owned by the WindowTreeHost (Compositor, X11Window, etc) are
properly cleaned up.
The PDF loading documentation in extension_system.cc has be updated to
describe the new code paths.
To support delivery of input events to the mime handler renderer process it is
now necessary to route events via the correct RWHV interface. For Aura-based
platforms (Windows/Linux) this means RWHVAura::On*Event and for macOS this
means RWHVMac::RouteOrProcess*Event. Since Aura uses UI event types these have
become the source of truth on Aura-based platforms with conversion to Web event
types when needed (primarily for OSR).
This change also adds a timeout for CefProcessHostMsg_GetNewBrowserInfo to
avoid a hung renderer process if the guest WebContents route is not
registered via CefMimeHandlerViewGuestDelegate::OnGuestDetached as expected
prior to CefBrowserInfoManager::OnGetNewBrowserInfo being called. This
timeout can be disabled for testing purposes by passing the
`--disable-new-browser-info-timeout` command-line flag.
The `--disable-features=MimeHandlerViewInCrossProcessFrame` command-line
flag can be used for a limited time to restore the previous implementation
based on BrowserPlugin. That implementation will be deleted starting with
the 3897 branch update.
Known issues:
- ExecuteJavaScript calls on the frame hosting the PDF extension will not
be routed to the mime handler renderer process.
- The PDF extension will not load successfully if blocked by
ChromePluginPlaceholder and then manually continued via the "Run this
plugin" context menu option (see https://crbug.com/533069#c41).
Mouse events need to be routed to the correct view and
CefRenderWidgetHostViewOSR::TransformPointToCoordSpaceForView needs to be
properly implemented for
RenderWidgetHostInputEventRouter::DispatchTouchscreenGestureEvent to
transform event position in the target widget.
Marshall Greenblatt
Alex Maitland
Mike Wiedenbauer
Jengerer
Vladislav
rcdrone
Cristian Amarie
Andrei Kurushin
Andy Tzeng
Alexander Guettler
Yong Li
elad bahar
Riku Palomäki
Masako Toda
Daniel Nitsche