Apply new Chromium style for #include sorting

Add "cef/" prefix for CEF #includes in libcef/ directory.

Sort #includes by following
https://google.github.io/styleguide/cppguide.html#Names_and_Order_of_Includes

patch/patch.cfg

@@ -44,12 +44,6 @@ patches = [
     # https://bugs.chromium.org/p/chromium/issues/detail?id=623342
     'name': 'runhooks',
   },
-  {
-    # Don't sort CEF and Chromium header includes into the same block.
-    # Partially reverts:
-    # https://chromium-review.googlesource.com/c/chromium/src/+/5197064
-    'name': 'clang_format_includes',
-  },
   {
     # Support component builds (GN is_component_build=true).
     # https://github.com/chromiumembedded/cef/issues/1617

patch/patches/clang_format_includes.patch

@@ -1,48 +0,0 @@
-diff --git .clang-format .clang-format
-index 87ff0884ee821..5a40766bbe63e 100644
---- .clang-format
-+++ .clang-format
-@@ -12,43 +12,6 @@ Standard: Cpp11
- InsertBraces: true
- InsertNewlineAtEOF: true
- 
--# Sort #includes by following
--# https://google.github.io/styleguide/cppguide.html#Names_and_Order_of_Includes
--#
--# ref: https://clang.llvm.org/docs/ClangFormatStyleOptions.html#includeblocks
--IncludeBlocks: Regroup
--# ref: https://clang.llvm.org/docs/ClangFormatStyleOptions.html#includecategories
--IncludeCategories:
--  # The win32 api has all sorts of implicit include order dependencies :-/
--  # Give a few headers special priorities that make sure they appear before
--  # all other headers.
--  # Sync this with SerializeIncludes in tools/add_header.py.
--  # TODO(crbug.com/329138753): remove include sorting from tools/add_header.py
--  # after confirming clang-format sort works well.
--  # LINT.IfChange(winheader)
--  - Regex:           '^<objbase\.h>' # This has to be before initguid.h.
--    Priority:        1
--  - Regex:           '^<(initguid|mmdeviceapi|windows|winsock2|ws2tcpip|shobjidl|atlbase|ole2|unknwn|tchar)\.h>'
--    Priority:        2
--  # LINT.ThenChange(/tools/add_header.py:winheader)
--  # UIAutomation*.h need to be after base/win/atl.h.
--  # Note the low priority number.
--  - Regex:           '^<UIAutomation.*\.h>'
--    Priority:        6
--  # Other C system headers.
--  - Regex:           '^<.*\.h>'
--    Priority:        3
--  # C++ standard library headers.
--  - Regex:           '^<.*'
--    Priority:        4
--  # Other libraries.
--  - Regex:           '.*'
--    Priority:        5
--# ref: https://clang.llvm.org/docs/ClangFormatStyleOptions.html#includeismainregex
--IncludeIsMainRegex: "\
--(_(32|64|android|apple|chromeos|freebsd|fuchsia|fuzzer|ios|linux|mac|nacl|openbsd|posix|stubs?|win))?\
--(_(unit|browser|perf)?tests?)?$"
--
- # Make sure code like:
- # IPC_BEGIN_MESSAGE_MAP()
- #   IPC_MESSAGE_HANDLER(WidgetHostViewHost_Update, OnUpdate)