scheduler: Move the Blink scheduler into Blink

content/utility/utility_blink_platform_impl.h

Index: content/utility/utility_blink_platform_impl.h
diff --git a/content/utility/utility_blink_platform_impl.h b/content/utility/utility_blink_platform_impl.h
index 32f9007c7e13070a6cc069b61b7fe02c2f089cfd..f8bc8dc8ae226dcab3b73d4a0b22c3c68f3e1936 100644
--- a/content/utility/utility_blink_platform_impl.h
+++ b/content/utility/utility_blink_platform_impl.h
@@ -10,9 +10,13 @@
 #include "base/macros.h"
 #include "content/child/blink_platform_impl.h"
 
-namespace content {
-
+namespace blink {
+namespace scheduler {
 class WebThreadImplForUtilityThread;
+}
+}
+
+namespace content {
 
 class UtilityBlinkPlatformImpl : public BlinkPlatformImpl {
  public:
@@ -23,7 +27,7 @@ class UtilityBlinkPlatformImpl : public BlinkPlatformImpl {
   blink::WebThread* currentThread() override;
 
  private:
-  std::unique_ptr<WebThreadImplForUtilityThread> main_thread_;
+  std::unique_ptr<blink::scheduler::WebThreadImplForUtilityThread> main_thread_;
 
   DISALLOW_COPY_AND_ASSIGN(UtilityBlinkPlatformImpl);
 };