Adding a command line flag to specify renderer process limit

content/browser/browser_main_loop.cc

Index: content/browser/browser_main_loop.cc
diff --git a/content/browser/browser_main_loop.cc b/content/browser/browser_main_loop.cc
index d208f74cdec2d9f3224ae9889b60c7b51b8537bf..1656f6ec42bb268ba006b00d657eb7bd23861a34 100644
--- a/content/browser/browser_main_loop.cc
+++ b/content/browser/browser_main_loop.cc
@@ -11,6 +11,7 @@
 #include "base/message_loop.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
+#include "base/string_number_conversions.h"
 #include "base/threading/thread_restrictions.h"
 #include "content/browser/browser_thread_impl.h"
 #include "content/browser/download/download_file_manager.h"
@@ -24,6 +25,7 @@
 #include "content/public/browser/browser_main_parts.h"
 #include "content/public/browser/browser_shutdown.h"
 #include "content/public/browser/content_browser_client.h"
+#include "content/public/browser/render_process_host.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/main_function_params.h"
 #include "content/public/common/result_codes.h"
@@ -268,6 +270,15 @@ void BrowserMainLoop::EarlyInitialization() {
   if (parsed_command_line_.HasSwitch(switches::kEnableTcpFastOpen))
     net::set_tcp_fastopen_enabled(true);
 
+  if (parsed_command_line_.HasSwitch(switches::kRendererProcessLimit)) {
+    std::string limit_string = parsed_command_line_.GetSwitchValueASCII(
+        switches::kRendererProcessLimit);
+    int process_limit;
+    if (base::StringToInt(limit_string, &process_limit)) {

[Charlie Reis, 2012/02/03 23:05:34]

We should use StringToSizeT, right?  No negatives allowed, and that's what
SetMax is expecting.

[nasko, 2012/02/07 00:42:05]

Done.

+      content::RenderProcessHost::SetMaxRendererProcessCount(process_limit);
+    }
+  }
+
   if (parts_.get())
     parts_->PostEarlyInitialization();
 }