Move GPU prelaunch to later in startup process to ensure the blacklist information is available.

content/browser/browser_main_loop.cc

Index: content/browser/browser_main_loop.cc
===================================================================
--- content/browser/browser_main_loop.cc	(revision 148344)
+++ content/browser/browser_main_loop.cc	(working copy)
@@ -437,6 +437,22 @@
   if (parts_.get())
     parts_->PreMainMessageLoopRun();
 
+  // When running the GPU thread in-process, avoid optimistically starting it
+  // since creating the GPU thread races against creation of the one-and-only
+  // ChildProcess instance which is created by the renderer thread.
+  GpuDataManager* gpu_data_manager = content::GpuDataManager::GetInstance();
+  if (gpu_data_manager->GpuAccessAllowed() &&
+      !parsed_command_line_.HasSwitch(switches::kDisableGpuProcessPrelaunch) &&
+      !parsed_command_line_.HasSwitch(switches::kSingleProcess) &&
+      !parsed_command_line_.HasSwitch(switches::kInProcessGPU)) {
+    TRACE_EVENT_INSTANT0("gpu", "Post task to launch GPU process");
+    BrowserThread::PostTask(
+        BrowserThread::IO, FROM_HERE, base::Bind(
+            base::IgnoreResult(&GpuProcessHost::Get),
+            GpuProcessHost::GPU_PROCESS_KIND_SANDBOXED,
+            content::CAUSE_FOR_GPU_LAUNCH_BROWSER_STARTUP));
+  }
+
   // If the UI thread blocks, the whole UI is unresponsive.
   // Do not allow disk IO from the UI thread.
   base::ThreadRestrictions::SetIOAllowed(false);
@@ -608,22 +624,7 @@
 
   // Start the GpuDataManager before we set up the MessageLoops because
   // otherwise we'll trigger the assertion about doing IO on the UI thread.
-  GpuDataManager* gpu_data_manager = content::GpuDataManager::GetInstance();
-
-  // When running the GPU thread in-process, avoid optimistically starting it
-  // since creating the GPU thread races against creation of the one-and-only
-  // ChildProcess instance which is created by the renderer thread.
-  if (gpu_data_manager->GpuAccessAllowed() &&
-      !parsed_command_line_.HasSwitch(switches::kDisableGpuProcessPrelaunch) &&
-      !parsed_command_line_.HasSwitch(switches::kSingleProcess) &&
-      !parsed_command_line_.HasSwitch(switches::kInProcessGPU)) {
-    TRACE_EVENT_INSTANT0("gpu", "Post task to launch GPU process");
-    BrowserThread::PostTask(
-        BrowserThread::IO, FROM_HERE, base::Bind(
-            base::IgnoreResult(&GpuProcessHost::Get),
-            GpuProcessHost::GPU_PROCESS_KIND_SANDBOXED,
-            content::CAUSE_FOR_GPU_LAUNCH_BROWSER_STARTUP));
-  }
+  content::GpuDataManager::GetInstance();
 }
 
 void BrowserMainLoop::InitializeToolkit() {