Add switch of chromedriver to disable build check

Chromedriver always checks the minimum Chrome number it supports.
However, under some circumstance, we don't have concrete build number.
For example, stock browser in aosp master just reports version
"38.0.0.0", which results in an error and refuses to continue. This CL
provides a switch to bypass this check.

BUG=418404

Review URL: https://codereview.chromium.org/611843002

Cr-Commit-Position: refs/heads/master@{#338618}

1 files changed, 8 insertions, 1 deletions

diff --git a/chrome/test/chromedriver/chrome_launcher.cc b/chrome/test/chromedriver/chrome_launcher.cc
index 1bcda40..5a79d67 100644
--- a/chrome/test/chromedriver/chrome_launcher.cc
+++ b/chrome/test/chromedriver/chrome_launcher.cc
@@ -182,7 +182,14 @@ Status WaitForDevToolsAndCheckVersion(
   Status status = client->Init(deadline - base::TimeTicks::Now());
   if (status.IsError())
     return status;
-  if (client->browser_info()->build_no < kMinimumSupportedChromeBuildNo) {
+
+  base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess();
+  if (cmd_line->HasSwitch("disable-build-check")) {
+    LOG(WARNING) << "You are using an unsupported command-line switch: "
+                    "--disable-build-check. Please don't report bugs that "
+                    "cannot be reproduced with this switch removed.";
+  } else if (client->browser_info()->build_no <
+             kMinimumSupportedChromeBuildNo) {
     return Status(kUnknownError, "Chrome version must be >= " +
         GetMinimumSupportedChromeVersion());
   }