Update to Chromium revision 0bfd25d4 (#381305)

- Delete include/cef_runnable.h (issue #1336).
- Build the cef_unittests target using all Chromium headers. Add a
  USING_CHROMIUM_INCLUDES define and libcef_dll_wrapper_unittests
  target to support this. This change avoids compile errors due to
  the divergence of CEF and Chromium base/ header implementations.
  The libcef_dll_wrapper sources must now compile successfully with
  both CEF and Chromium base/ headers (issue #1632).
- The onbeforeunload message specified via JavaScript is no longer
  passed to the client (see http://crbug.com/587940).

patch/patches/browser_frame_host_guest_1687.patch

@@ -1,8 +1,8 @@
 diff --git render_widget_host_view_guest.cc render_widget_host_view_guest.cc
-index a080567..8da4190 100644
+index 1312e52..3d1656c 100644
 --- render_widget_host_view_guest.cc
 +++ render_widget_host_view_guest.cc
-@@ -220,6 +220,9 @@ void RenderWidgetHostViewGuest::Destroy() {
+@@ -191,6 +191,9 @@ void RenderWidgetHostViewGuest::Destroy() {
  }
  
  gfx::Size RenderWidgetHostViewGuest::GetPhysicalBackingSize() const {