Update to Chromium version 82.0.4085.0 (#749737)

- Building on macOS now requires the 10.15 SDK. Xcode 11.3 is recommended as
  Xcode 11.4 is not currently supported (see https://crbug.com/1065146).
- Jumbo build configuration is no longer supported.

Chromium is skipping the M82 release and consequently no CEF 4085 branch will
be created. For details on the Chromium decision see
https://groups.google.com/a/chromium.org/d/msg/chromium-dev/Vn7uzglqLz0/JItlSrZxBAAJ

patch/patches/build.patch

@@ -1,8 +1,8 @@
 diff --git build/config/compiler/BUILD.gn build/config/compiler/BUILD.gn
-index eef1140e8006..0e222de2a9a6 100644
+index 9573394d28b8..eb3663551a62 100644
 --- build/config/compiler/BUILD.gn
 +++ build/config/compiler/BUILD.gn
-@@ -162,7 +162,7 @@ declare_args() {
+@@ -163,7 +163,7 @@ declare_args() {
              !use_clang_coverage && !(is_android && use_order_profiling) &&
              (use_lld ||
               (use_gold &&
@@ -11,7 +11,7 @@ index eef1140e8006..0e222de2a9a6 100644
                 !(current_cpu == "x86" || current_cpu == "x64"))))
  }
  
-@@ -1743,8 +1743,6 @@ config("thin_archive") {
+@@ -1748,8 +1748,6 @@ config("thin_archive") {
    # archive names to 16 characters, which is not what we want).
    if ((is_posix && !is_nacl && !is_mac && !is_ios) || is_fuchsia) {
      arflags = [ "-T" ]