[Build] Remove "version" field in size config JSON files.

With crrev.com/c/2535582 changing how android-binary-size-generator bot
results on gs:// can be invalidated, the "version" field in size config
JSON files are no longer needed, and can be remove.

This CL needs to wait on the downstream change
  https://chrome-internal-review.googlesource.com/c/clank/internal/apps/+/3402103
to land first, to allow template "android_size_bot_config" change.

Bug: 1040645
Change-Id: I4a6af0fce816c4994777db09f48a336b60be47b8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2536853Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Commit-Queue: Samuel Huang <huangs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#827561}

build/android/resource_sizes.gni

@@ -81,8 +81,6 @@ template("android_resource_sizes_test") {
 #   to_resource_sizes_py: Scope containing data to pass to resource_sizes.py,
 #     processed by generate_commit_size_analysis.py.
 #   supersize_input_file: Main input for SuperSize.
-#   version: Version number, uses to notify build bots that significant changes
-#     has occurred, so that gs:// should be ignored.
 template("android_size_bot_config") {
   _full_target_name = get_label_info(target_name, "label_no_toolchain")
   _out_json = {
@@ -92,7 +90,6 @@ template("android_size_bot_config") {
                              "mapping_files",
                              "to_resource_sizes_py",
                              "supersize_input_file",
-                             "version",
                            ])
   }
   _output_json_path = "$root_build_dir/config/${invoker.name}_size_config.json"

chrome/android/BUILD.gn

@@ -3014,7 +3014,6 @@ if (is_official_build) {
       apk_name = "apks/$_minimal_apks_filename"
     }
     supersize_input_file = "apks/$_minimal_apks_filename"
-    version = "1"
   }
 }
 
@@ -3100,7 +3099,6 @@ if (is_official_build) {
       trichrome_webview = "apks/$_trichrome_webview_basename"
     }
     supersize_input_file = "apks/$_ssargs_filename"
-    version = "1"
   }
 }
 

tools/binary_size/generate_commit_size_analysis.py

@@ -91,8 +91,6 @@ def main():
   # * supersize_input_file: Main input for SuperSize, and can be {.apk,
   #   .minimal.apks, .ssargs}. If .ssargs, then the file is copied to the
   #   staging dir.
-  # * version: (Unused by this script) Used by build bots to determine whether
-  #   significant binary package restructure has occurred.
 
   # --size-config-json will replace {--apk-name, --mapping-name}.
   parser.add_argument('--size-config-json',