Refactor chromedriver's script execution to reduce amount of custom Value parsing.

chrome/chrome_tests.gypi

Index: chrome/chrome_tests.gypi
diff --git a/chrome/chrome_tests.gypi b/chrome/chrome_tests.gypi
index 5bda4d776ea279e50dc0e2717ab7291152bdc34e..5e275d334cb54a91679c7ed86f600c918c982e25 100644
--- a/chrome/chrome_tests.gypi
+++ b/chrome/chrome_tests.gypi
@@ -146,6 +146,9 @@
         'test/automation/javascript_message_utils.h',
         'test/automation/tab_proxy.cc',
         'test/automation/tab_proxy.h',
+        'test/automation/value_conversion_traits.cc',
+        'test/automation/value_conversion_traits.h',
+        'test/automation/value_conversion_util.h',
         'test/automation/window_proxy.cc',
         'test/automation/window_proxy.h',
         'test/base/bookmark_load_observer.cc',
@@ -818,6 +821,16 @@
       ],
     },
     {
+      # Third-party support sources for chromedriver_lib.
+      'target_name': 'chromedriver_support',
+      'type': 'static_library',
+      'sources': [
+        '../third_party/mongoose/mongoose.c',
+        '../third_party/mongoose/mongoose.h',
+        '../third_party/webdriver/atoms.h',
+      ],
+    },
+    {
       # chromedriver is the chromium impelmentation of the WebDriver
       # wire protcol.  A description of the WebDriver and examples can
       # be found at: http://seleniumhq.org/docs/09_webdriver.html.
@@ -830,6 +843,7 @@
         'chrome',
         'chrome_resources',
         'chrome_strings',
+        'chromedriver_support',
         'common',
         'syncapi_core',
         'test_support_ui',
@@ -846,80 +860,79 @@
         '..',
       ],
       'sources': [
-        '../third_party/mongoose/mongoose.h',
-        '../third_party/mongoose/mongoose.c',
-        '../third_party/webdriver/atoms.h',
-        'test/webdriver/automation.h',
         'test/webdriver/automation.cc',
-        'test/webdriver/dispatch.h',
-        'test/webdriver/dispatch.cc',
-        'test/webdriver/frame_path.h',
-        'test/webdriver/frame_path.cc',
-        'test/webdriver/http_response.h',
-        'test/webdriver/http_response.cc',
-        'test/webdriver/keycode_text_conversion.h',
-        'test/webdriver/keycode_text_conversion_linux.cc',
-        'test/webdriver/keycode_text_conversion_mac.mm',
-        'test/webdriver/keycode_text_conversion_win.cc',
-        'test/webdriver/keymap.h',
-        'test/webdriver/keymap.cc',
-        'test/webdriver/session.h',
-        'test/webdriver/session.cc',
-        'test/webdriver/session_manager.h',
-        'test/webdriver/session_manager.cc',
-        'test/webdriver/utility_functions.h',
-        'test/webdriver/utility_functions.cc',
-        'test/webdriver/utility_functions_mac.mm',
-        'test/webdriver/webdriver_error.h',
-        'test/webdriver/webdriver_error.cc',
-        'test/webdriver/webdriver_logging.h',
-        'test/webdriver/webdriver_logging.cc',
-        'test/webdriver/webdriver_key_converter.h',
-        'test/webdriver/webdriver_key_converter.cc',
-        'test/webdriver/web_element_id.h',
-        'test/webdriver/web_element_id.cc',
-        'test/webdriver/commands/alert_commands.h',
+        'test/webdriver/automation.h',
         'test/webdriver/commands/alert_commands.cc',
-        'test/webdriver/commands/appcache_status_command.h',
+        'test/webdriver/commands/alert_commands.h',
         'test/webdriver/commands/appcache_status_command.cc',
-        'test/webdriver/commands/browser_connection_commands.h',
+        'test/webdriver/commands/appcache_status_command.h',
         'test/webdriver/commands/browser_connection_commands.cc',
-        'test/webdriver/commands/command.h',
+        'test/webdriver/commands/browser_connection_commands.h',
         'test/webdriver/commands/command.cc',
-        'test/webdriver/commands/cookie_commands.h',
+        'test/webdriver/commands/command.h',
         'test/webdriver/commands/cookie_commands.cc',
-        'test/webdriver/commands/create_session.h',
+        'test/webdriver/commands/cookie_commands.h',
         'test/webdriver/commands/create_session.cc',
-        'test/webdriver/commands/execute_async_script_command.h',
+        'test/webdriver/commands/create_session.h',
         'test/webdriver/commands/execute_async_script_command.cc',
-        'test/webdriver/commands/execute_command.h',
+        'test/webdriver/commands/execute_async_script_command.h',
         'test/webdriver/commands/execute_command.cc',
-        'test/webdriver/commands/find_element_commands.h',
+        'test/webdriver/commands/execute_command.h',
         'test/webdriver/commands/find_element_commands.cc',
-        'test/webdriver/commands/navigate_commands.h',
+        'test/webdriver/commands/find_element_commands.h',
         'test/webdriver/commands/navigate_commands.cc',
-        'test/webdriver/commands/mouse_commands.h',
+        'test/webdriver/commands/navigate_commands.h',
         'test/webdriver/commands/mouse_commands.cc',
-        'test/webdriver/commands/response.cc',
+        'test/webdriver/commands/mouse_commands.h',
         'test/webdriver/commands/response.h',
-        'test/webdriver/commands/screenshot_command.h',
+        'test/webdriver/commands/response.cc',
         'test/webdriver/commands/screenshot_command.cc',
-        'test/webdriver/commands/session_with_id.h',
+        'test/webdriver/commands/screenshot_command.h',
         'test/webdriver/commands/session_with_id.cc',
-        'test/webdriver/commands/set_timeout_commands.h',
+        'test/webdriver/commands/session_with_id.h',
         'test/webdriver/commands/set_timeout_commands.cc',
-        'test/webdriver/commands/source_command.h',
+        'test/webdriver/commands/set_timeout_commands.h',
         'test/webdriver/commands/source_command.cc',
-        'test/webdriver/commands/target_locator_commands.h',
+        'test/webdriver/commands/source_command.h',
         'test/webdriver/commands/target_locator_commands.cc',
-        'test/webdriver/commands/title_command.h',
+        'test/webdriver/commands/target_locator_commands.h',
         'test/webdriver/commands/title_command.cc',
-        'test/webdriver/commands/url_command.h',
+        'test/webdriver/commands/title_command.h',
         'test/webdriver/commands/url_command.cc',
-        'test/webdriver/commands/webdriver_command.h',
+        'test/webdriver/commands/url_command.h',
         'test/webdriver/commands/webdriver_command.cc',
-        'test/webdriver/commands/webelement_commands.h',
+        'test/webdriver/commands/webdriver_command.h',
         'test/webdriver/commands/webelement_commands.cc',
+        'test/webdriver/commands/webelement_commands.h',
+        'test/webdriver/dispatch.cc',
+        'test/webdriver/dispatch.h',
+        'test/webdriver/frame_path.cc',
+        'test/webdriver/frame_path.h',
+        'test/webdriver/http_response.cc',
+        'test/webdriver/http_response.h',
+        'test/webdriver/keycode_text_conversion.h',
+        'test/webdriver/keycode_text_conversion_linux.cc',
+        'test/webdriver/keycode_text_conversion_mac.mm',
+        'test/webdriver/keycode_text_conversion_win.cc',
+        'test/webdriver/keymap.cc',
+        'test/webdriver/keymap.h',
+        'test/webdriver/session.cc',
+        'test/webdriver/session.h',
+        'test/webdriver/session_manager.cc',
+        'test/webdriver/session_manager.h',
+        'test/webdriver/webdriver_basic_types.cc',
+        'test/webdriver/webdriver_basic_types.h',
+        'test/webdriver/webdriver_error.cc',
+        'test/webdriver/webdriver_error.h',
+        'test/webdriver/webdriver_key_converter.cc',
+        'test/webdriver/webdriver_key_converter.h',
+        'test/webdriver/webdriver_logging.cc',
+        'test/webdriver/webdriver_logging.h',
+        'test/webdriver/webdriver_util.cc',
+        'test/webdriver/webdriver_util.h',
+        'test/webdriver/webdriver_util_mac.mm',
+        'test/webdriver/web_element_id.cc',
+        'test/webdriver/web_element_id.h',
       ],
       'conditions': [
         ['toolkit_uses_gtk == 1', {
@@ -1005,10 +1018,10 @@
         'test/webdriver/frame_path_unittest.cc',
         'test/webdriver/http_response_unittest.cc',
         'test/webdriver/keycode_text_conversion_unittest.cc',
-        'test/webdriver/utility_functions_unittest.cc',
         'test/webdriver/webdriver_key_converter_unittest.cc',
         'test/webdriver/webdriver_test_util.cc',
         'test/webdriver/webdriver_test_util.h',
+        'test/webdriver/webdriver_util_unittest.cc',
       ],
       'conditions': [
         ['OS=="win"', {