Update to Chromium version 74.0.3729.0 (#638880)

- Windows: 10.0.17763.0 SDK is now required.
- Mac: 10.13 SDK is now required.
- Removed CefRequestContext::ResolveHostCached which is no longer supported by Chromium.

patch/patches/gn_config.patch

@@ -1,8 +1,8 @@
 diff --git .gn .gn
-index b3587587786f..8d3ff106d714 100644
+index 0591fc512d52..23d066a9254d 100644
 --- .gn
 +++ .gn
-@@ -671,6 +671,8 @@ exec_script_whitelist =
+@@ -669,6 +669,8 @@ exec_script_whitelist =
        # in the Chromium repo outside of //build.
        "//build_overrides/build.gni",
  
@@ -12,10 +12,10 @@ index b3587587786f..8d3ff106d714 100644
        # https://crbug.com/474506.
        "//clank/java/BUILD.gn",
 diff --git BUILD.gn BUILD.gn
-index b7227438d469..c879fd3d071d 100644
+index f50c9f99a36e..33be1efac8f0 100644
 --- BUILD.gn
 +++ BUILD.gn
-@@ -188,6 +188,7 @@ group("gn_all") {
+@@ -189,6 +189,7 @@ group("gn_all") {
  
    if (!is_ios && !is_fuchsia) {
      deps += [
@@ -100,7 +100,7 @@ index 2c8675206f31..d3e419d8fe98 100644
  
  
 diff --git build/vs_toolchain.py build/vs_toolchain.py
-index 83b5e25dfa87..65186ae4780c 100755
+index 1ab7be527726..1467d18c1a81 100755
 --- build/vs_toolchain.py
 +++ build/vs_toolchain.py
 @@ -76,11 +76,18 @@ def SetEnvironmentAndGetRuntimeDllDirs():
@@ -123,10 +123,10 @@ index 83b5e25dfa87..65186ae4780c 100755
      # directory in order to run binaries locally, but they are needed in order
      # to create isolates or the mini_installer. Copying them to the output
 diff --git chrome/chrome_paks.gni chrome/chrome_paks.gni
-index 4c790d3ee4e6..e9f3768c20d6 100644
+index ca18ca7ca65b..b51ebadccd0d 100644
 --- chrome/chrome_paks.gni
 +++ chrome/chrome_paks.gni
-@@ -265,7 +265,7 @@ template("chrome_paks") {
+@@ -263,7 +263,7 @@ template("chrome_paks") {
      }
  
      input_locales = locales
@@ -136,7 +136,7 @@ index 4c790d3ee4e6..e9f3768c20d6 100644
      if (is_mac) {
        output_locales = locales_as_mac_outputs
 diff --git chrome/installer/mini_installer/BUILD.gn chrome/installer/mini_installer/BUILD.gn
-index 8d19c74ebe9d..7470cc298e36 100644
+index ec629333b006..981f3f26548d 100644
 --- chrome/installer/mini_installer/BUILD.gn
 +++ chrome/installer/mini_installer/BUILD.gn
 @@ -134,7 +134,7 @@ template("generate_mini_installer") {