Add Chromium-only Blender WebEngine parity work

blender-5.2.0/extern/gtest/patches/fa8438ae6b70c57010177de47a9f13d7041a6328.patch

@@ -0,0 +1,46 @@
+From fa8438ae6b70c57010177de47a9f13d7041a6328 Mon Sep 17 00:00:00 2001
+From: Abseil Team <absl-team@google.com>
+Date: Mon, 19 May 2025 09:01:54 -0700
+Subject: [PATCH] Use static_cast instead of ImplicitCast_ for character
+ conversions
+
+Clang has recently added "warnings when mixing different charN_t types" [1].
+The rationale is that "charN_t represent code units of different UTF encodings.
+Therefore the values of 2 different charN_t objects do not represent the same
+characters."
+
+Note that the warning here may be legitimate - from https://github.com/google/googletest/issues/4762:
+"[...] This is incorrect for values that do not represent valid codepoints."
+
+For the time being, silence the warning by being more explicit about the
+conversion being intentional by using static_cast.
+
+Link: https://github.com/llvm/llvm-project/pull/138708 [1]
+PiperOrigin-RevId: 760644157
+Change-Id: I2e6cc1871975455cecac8731b2f93fd5beeaf0e1
+---
+ googletest/include/gtest/gtest-printers.h | 8 ++++++--
+ 1 file changed, 6 insertions(+), 2 deletions(-)
+
+diff --git a/googletest/include/gtest/gtest-printers.h b/googletest/include/gtest/gtest-printers.h
+index 198a769349..bbb0fa7e74 100644
+--- a/googletest/include/gtest/gtest-printers.h
++++ b/googletest/include/gtest/gtest-printers.h
+@@ -521,11 +521,15 @@ GTEST_API_ void PrintTo(wchar_t wc, ::std::ostream* os);
+ 
+ GTEST_API_ void PrintTo(char32_t c, ::std::ostream* os);
+ inline void PrintTo(char16_t c, ::std::ostream* os) {
+-  PrintTo(ImplicitCast_<char32_t>(c), os);
++  // TODO(b/418738869): Incorrect for values not representing valid codepoints.
++  // Also see https://github.com/google/googletest/issues/4762.
++  PrintTo(static_cast<char32_t>(c), os);
+ }
+ #ifdef __cpp_lib_char8_t
+ inline void PrintTo(char8_t c, ::std::ostream* os) {
+-  PrintTo(ImplicitCast_<char32_t>(c), os);
++  // TODO(b/418738869): Incorrect for values not representing valid codepoints.
++  // Also see https://github.com/google/googletest/issues/4762.
++  PrintTo(static_cast<char32_t>(c), os);
+ }
+ #endif
+ 

blender-5.2.0/extern/gtest/patches/gcc15.patch

@@ -0,0 +1,34 @@
+From 00b2154e8e4bbb1ab0b22580c9f19fbfd3f56c04 Mon Sep 17 00:00:00 2001
+From: Derek Mauro <dmauro@google.com>
+Date: Tue, 29 Apr 2025 06:12:50 -0700
+Subject: [PATCH] Fix GCC15 warning that <ciso646> is deprecated in C++17
+
+PiperOrigin-RevId: 752706554
+Change-Id: I83d35b693efdaabcc63d15169dbf19d63163a563
+---
+ googletest/include/gtest/internal/gtest-port.h | 12 ++++++++----
+ 1 file changed, 8 insertions(+), 4 deletions(-)
+
+diff --git a/googletest/include/gtest/internal/gtest-port.h b/googletest/include/gtest/internal/gtest-port.h
+index 4cfc16c03e..25b7d194db 100644
+--- a/googletest/include/gtest/internal/gtest-port.h
++++ b/googletest/include/gtest/internal/gtest-port.h
+@@ -282,10 +282,14 @@
+ 
+ // Detect C++ feature test macros as gracefully as possible.
+ // MSVC >= 19.15, Clang >= 3.4.1, and GCC >= 4.1.2 support feature test macros.
+-#if GTEST_INTERNAL_CPLUSPLUS_LANG >= 202002L && \
+-    (!defined(__has_include) || GTEST_INTERNAL_HAS_INCLUDE(<version>))
+-#include <version>  // C++20 and later
+-#elif (!defined(__has_include) || GTEST_INTERNAL_HAS_INCLUDE(<ciso646>))
++//
++// GCC15 warns that <ciso646> is deprecated in C++17 and suggests using
++// <version> instead, even though <version> is not available in C++17 mode prior
++// to GCC9.
++#if GTEST_INTERNAL_CPLUSPLUS_LANG >= 202002L || \
++    GTEST_INTERNAL_HAS_INCLUDE(<version>)
++#include <version>  // C++20 or <version> support.
++#else
+ #include <ciso646>  // Pre-C++20
+ #endif
+