cc: Set ui/gpu/cc/ipc/upload/raster thread priorities.

content/common/child_process.cc

Index: content/common/child_process.cc
diff --git a/content/common/child_process.cc b/content/common/child_process.cc
index f0dfdc5db41736bcf83c05e2650c5a9c7d3b40d1..6e5d9a45d5f6ae4e6dd58e86d34793c93b862079 100644
--- a/content/common/child_process.cc
+++ b/content/common/child_process.cc
@@ -18,6 +18,8 @@
 
 #if defined(OS_ANDROID)
 #include "base/debug/debugger.h"
+// TODO(epenner): Move thread priorities to base. (crbug.com/170549)
+#include <sys/resource.h>
 #endif
 
 #if defined(OS_POSIX) && !defined(OS_ANDROID)
@@ -28,6 +30,16 @@ namespace content {
 
 ChildProcess* ChildProcess::child_process_;
 
+#if defined(OS_ANDROID)
+// TODO(epenner): Move thread priorities to base. (crbug.com/170549)
+namespace {
+void SetHighThreadPriority() {
+  int nice_value = -6; // High priority.
+  setpriority(PRIO_PROCESS, base::PlatformThread::CurrentId(), nice_value);
+}
+}
+#endif
+
 ChildProcess::ChildProcess()
     : ref_count_(0),
       shutdown_event_(true, false),
@@ -40,6 +52,12 @@ ChildProcess::ChildProcess()
   // We can't recover from failing to start the IO thread.
   CHECK(io_thread_.StartWithOptions(
             base::Thread::Options(MessageLoop::TYPE_IO, 0)));
+
+#if defined(OS_ANDROID)
+  // TODO(epenner): Move thread priorities to base. (crbug.com/170549)
+  io_thread_.message_loop()->PostTask(FROM_HERE,
+                                      base::Bind(&SetHighThreadPriority));
+#endif
 }
 
 ChildProcess::~ChildProcess() {