[Password manager tests] Enable "Offer to save password" via webriver.

components/test/data/password_manager/automated_tests/environment.py

Index: components/test/data/password_manager/automated_tests/environment.py
diff --git a/components/test/data/password_manager/automated_tests/environment.py b/components/test/data/password_manager/automated_tests/environment.py
index a8b5f9d03321a2d998dac41c2d1366da7c0c2fee..99b6ec078c63ef25b243f6546999e4fe9fbcb7ca 100644
--- a/components/test/data/password_manager/automated_tests/environment.py
+++ b/components/test/data/password_manager/automated_tests/environment.py
@@ -189,6 +189,22 @@ class Environment:
     script += "document.querySelector('#clear-browser-data-commit').click();"
     self.driver.execute_script(script)
     time.sleep(2)
+    # Every time we do something we cache let's enable password saving.

[vabr (Chromium), 2015/02/02 09:25:29]

possible typo:
we cache -> to the cache
?

[melandory, 2015/02/02 09:35:53]

Done.

+    # TODO(melandory): We should check why it's off on a first place.

[vabr (Chromium), 2015/02/02 09:25:29]

nit: on the first place -> in the first place
Also, could you please mention the role of chromedriver? For example:
"While saving passwords is enabled by default normally, once Chrome is run via
chromedriver, the setting is off."

[melandory, 2015/02/02 09:35:53]

Done.

+    # TODO(melandory): Investigate, maybe there is no need to enable it that
+    # often

[vabr (Chromium), 2015/02/02 09:25:29]

nit: Missing a full stop at the end of the sentence.

[melandory, 2015/02/02 09:35:53]

Done.

+    self.EnablePasswordsSaving()
+
+  def EnablePasswordsSaving(self):
+    logging.info("\nEnablePasswordSaving\n")
+    self.driver.get("chrome://settings")
+    self.driver.switch_to_frame("settings")
+    script = "document.getElementById('advanced-settings-expander').click();"
+    script += (
+        "if (!document.querySelector('#password-manager-enabled').checked)"
+        "{ document.querySelector('#password-manager-enabled').click();}")
+    self.driver.execute_script(script)
+    time.sleep(2)
 
   def OpenTabAndGoToInternals(self, url):
     """If there is no |self.website_window|, opens a new tab and navigates to