[dotnet] Trim away CDP when publishing AOT apps

[RenderMichael]

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Motivation and Context

Sample app:

Console.WriteLine("Start");

Log.SetLevel(LogEventLevel.Trace);

var options = new ChromeOptions { UseWebSocketUrl = true, BrowserVersion = "131" };

using var driver = new ChromeDriver(options);

driver.Url = "https://www.google.com";

Thread.Sleep(2500);
driver.FindElements(By.CssSelector("div"));

Size before PR: 9.0 MB
Size after PR: 6.7 MB

Size savings: 2.3 MB

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

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PR Type

Enhancement

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Description

• Optimized the WebDriver class to reduce application size.

• Deferred initialization of NetworkManager to save resources.

• Removed unused or redundant code for cleaner implementation.

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Changes walkthrough 📝

	Relevant files
Enhancement	WebDriver.cs Optimize and streamline `WebDriver` initialization              dotnet/src/webdriver/WebDriver.cs Removed direct initialization of NetworkManager. Deferred NetworkManager initialization using a null-coalescing assignment. Deleted unused Network property setter. Cleaned up redundant code for better maintainability. +1/-5

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[qodo-merge-pro]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Thread Safety The lazy initialization of Network property using null-coalescing assignment is not thread-safe. Multiple threads accessing this property simultaneously could potentially create multiple NetworkManager instances. internal INetwork Network => this.network ??= new NetworkManager(this);

[qodo-merge-pro]

PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Score
Possible issue	Add thread-safe initialization pattern Add null check before accessing this.network to prevent potential NullReferenceException in multi-threaded scenarios. The current implementation might have race conditions. dotnet/src/webdriver/WebDriver.cs [218] -internal INetwork Network => this.network ??= new NetworkManager(this); +internal INetwork Network +{ + get + { + if (this.network == null) + { + lock (this) + { + this.network ??= new NetworkManager(this); + } + } + return this.network; + } +} Apply this suggestion Suggestion importance[1-10]: 8 Why: The suggestion addresses a critical thread-safety issue by implementing a double-checked locking pattern, which prevents potential race conditions during NetworkManager initialization in multi-threaded environments.	8
Learned best practice	Use modern C# pattern matching instead of explicit null checks when checking interface implementation While the PR introduces the null-coalescing assignment (??=) operator for the Network property, the null check for ISupportsLogs interface could be simplified using the is pattern matching operator for more concise and modern C# code. dotnet/src/webdriver/WebDriver.cs [81] -if ((this as ISupportsLogs) != null) +if (this is ISupportsLogs) { Apply this suggestion	6

[RenderMichael]

NetworkManager captures IDevTools.GetDevToolsSession in the constructor, which pulls in many CDP types.

We do not want to touch NetworkManager unless user calls driver.Network.