Moved logic for mapping child process FDs for ICU and V8 into child_process_launcher.cc

chrome/browser/chrome_content_browser_client.h

Index: chrome/browser/chrome_content_browser_client.h
diff --git a/chrome/browser/chrome_content_browser_client.h b/chrome/browser/chrome_content_browser_client.h
index 9edd155f6d502010b6b39b67bc9ea5a438f869f0..d618af5287a740a262561125b28c715650741f01 100644
--- a/chrome/browser/chrome_content_browser_client.h
+++ b/chrome/browser/chrome_content_browser_client.h
@@ -112,8 +112,6 @@ class ChromeContentBrowserClient : public content::ContentBrowserClient {
       const std::string& alias_name) override;
   void AppendExtraCommandLineSwitches(base::CommandLine* command_line,
                                       int child_process_id) override;
-  void AppendMappedFileCommandLineSwitches(
-      base::CommandLine* command_line) override;
   std::string GetApplicationLocale() override;
   std::string GetAcceptLangs(content::BrowserContext* context) override;
   const gfx::ImageSkia* GetDefaultFavicon() override;
@@ -307,13 +305,6 @@ class ChromeContentBrowserClient : public content::ContentBrowserClient {
   std::set<std::string> allowed_dev_channel_origins_;
 #endif
 
-#if defined(OS_POSIX) && !defined(OS_MACOSX)
-  base::ScopedFD v8_natives_fd_;
-  base::ScopedFD v8_snapshot_fd_;
-  bool natives_fd_exists() { return v8_natives_fd_ != -1; }
-  bool snapshot_fd_exists() { return v8_snapshot_fd_ != -1; }
-#endif  // OS_POSIX && !OS_MACOSX
-
   // Vector of additional ChromeContentBrowserClientParts.
   // Parts are deleted in the reverse order they are added.
   std::vector<ChromeContentBrowserClientParts*> extra_parts_;