Remove command_execution_timeout_ms and fix all the callers.

chrome/test/pyautolib/pyautolib.h

Index: chrome/test/pyautolib/pyautolib.h
diff --git a/chrome/test/pyautolib/pyautolib.h b/chrome/test/pyautolib/pyautolib.h
index 3761aa8ba1147a3f2ede23852ee2a087b0e9ae71..e663f26c2e2459a71c8823c014e5d5e67fe04519 100644
--- a/chrome/test/pyautolib/pyautolib.h
+++ b/chrome/test/pyautolib/pyautolib.h
@@ -192,6 +192,10 @@ class PyUITestBase : public UITestBase {
     return TestTimeouts::action_max_timeout_ms();
   }
 
+  int command_execution_timeout_ms() const {
+    return TestTimeouts::command_execution_timeout_ms();
+  }
+
  private:
   // Enables PostTask to main thread.
   // Should be shared across multiple instances of PyUITestBase so that this