Use WaitForDebuggerChildren to let renderer wait for gdb

content/browser/renderer_host/render_process_host_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 1261 matching lines @@
   // Disable databases in incognito mode.
   if (GetBrowserContext()->IsOffTheRecord() &&
       !browser_cmd.HasSwitch(switches::kDisableDatabases)) {
     renderer_cmd->AppendSwitch(switches::kDisableDatabases);
   }
 
   // Enforce the extra command line flags for impl-side painting.
   if (IsImplSidePaintingEnabled() &&
       !browser_cmd.HasSwitch(switches::kEnableDeferredImageDecoding))
     renderer_cmd->AppendSwitch(switches::kEnableDeferredImageDecoding);
+
+  // Add kWaitForDebugger to let renderer process wait for a debugger.
+  if (browser_cmd.HasSwitch(switches::kWaitForDebuggerChildren)) {
+    // Look to pass-on the kWaitForDebugger flag.
+    std::string value =
+        browser_cmd.GetSwitchValueASCII(switches::kWaitForDebuggerChildren);
+    if (value.empty() || value == switches::kRendererProcess) {
+      renderer_cmd->AppendSwitch(switches::kWaitForDebugger);
+    }
+  }
 }
 
 base::ProcessHandle RenderProcessHostImpl::GetHandle() const {
   if (run_renderer_in_process())
     return base::Process::Current().handle();
 
   if (!child_process_launcher_.get() || child_process_launcher_->IsStarting())
     return base::kNullProcessHandle;
 
   return child_process_launcher_->GetHandle();
@@ skipping 1061 matching lines @@
 }
 
 void RenderProcessHostImpl::OnDeletedGpuMemoryBuffer(
     gfx::GpuMemoryBufferType type,
     const gfx::GpuMemoryBufferId& id) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   GpuMemoryBufferImpl::DeletedByChildProcess(type, id, GetHandle());
 }
 
 }  // namespace content