[chromedriver] Create release script and handle Chrome/ChromeDriver versions.

chrome/test/chromedriver/commands.cc

Index: chrome/test/chromedriver/commands.cc
diff --git a/chrome/test/chromedriver/commands.cc b/chrome/test/chromedriver/commands.cc
index 23aeb3b8578501be724f124b9b82d15c230cb7a2..3565cbafb2819d5b3c1502990355a46c156bd563 100644
--- a/chrome/test/chromedriver/commands.cc
+++ b/chrome/test/chromedriver/commands.cc
@@ -6,9 +6,12 @@
 
 #include "base/bind.h"
 #include "base/callback.h"
+#include "base/environment.h"
 #include "base/file_util.h"
 #include "base/format_macros.h"
 #include "base/rand_util.h"
+#include "base/string_number_conversions.h"
+#include "base/string_split.h"
 #include "base/stringprintf.h"
 #include "base/time.h"
 #include "base/values.h"
@@ -16,6 +19,7 @@
 #include "chrome/test/chromedriver/chrome_launcher.h"
 #include "chrome/test/chromedriver/session.h"
 #include "chrome/test/chromedriver/status.h"
+#include "chrome/test/chromedriver/version.h"
 #include "third_party/webdriver/atoms.h"
 
 namespace {
@@ -117,6 +121,31 @@ Status ExecuteNewSession(
   if (status.IsError())
     return Status(kSessionNotCreatedException, status.message());
 
+  scoped_ptr<base::Environment> env(base::Environment::Create());
+  scoped_ptr<base::Value> chrome_version_value;
+  std::string chrome_version;
+  status = chrome->EvaluateScript(
+      "",
+      "navigator.appVersion.match(/Chrome\\/.* /)[0].split('/')[1].trim()",
+      &chrome_version_value);
+  if (status.IsError() || !chrome_version_value->GetAsString(&chrome_version))
+    return Status(kUnknownError, "unable to detect Chrome version");
+  // Check the version of Chrome is supported.
+  // Allow the version check to be skipped for testing/development purposes.
+  if (!env->HasVar("IGNORE_CHROME_VERSION")) {
+    int build_no;
+    std::vector<std::string> chrome_version_parts;
+    base::SplitString(chrome_version, '.', &chrome_version_parts);
+    if (chrome_version_parts.size() != 4 ||
+        !base::StringToInt(chrome_version_parts[2], &build_no)) {
+      return Status(kUnknownError, "unrecognized Chrome version: " +
+          chrome_version);
+    }
+    if (build_no < kMinimumSupportedChromeBuildNo)
+      return Status(kUnknownError, "Chrome version must be >= " +
+          GetMinimumSupportedChromeVersion());
+  }
+
   uint64 msb = base::RandUint64();
   uint64 lsb = base::RandUint64();
   std::string new_id =
@@ -128,6 +157,8 @@ Status ExecuteNewSession(
 
   base::DictionaryValue* returned_value = new base::DictionaryValue();
   returned_value->SetString("browserName", "chrome");
+  returned_value->SetString("version", chrome_version);
+  returned_value->SetString("driverVersion", kChromeDriverVersion);
   out_value->reset(returned_value);
   *out_session_id = new_id;
   return Status(kOk);