Add TestBrowserThreadBundle into RenderViewHostTestHarness. Kill some unnecessary real threads.

chrome/test/base/chrome_render_view_host_test_harness.cc

Index: chrome/test/base/chrome_render_view_host_test_harness.cc
diff --git a/chrome/test/base/chrome_render_view_host_test_harness.cc b/chrome/test/base/chrome_render_view_host_test_harness.cc
index e595ebd1bd54fd1b1dfed73a260111efd5c9ec8d..e3f25011739de0651e4491a3bc565fbbe12f8407 100644
--- a/chrome/test/base/chrome_render_view_host_test_harness.cc
+++ b/chrome/test/base/chrome_render_view_host_test_harness.cc
@@ -21,8 +21,7 @@
 using content::RenderViewHostTester;
 using content::RenderViewHostTestHarness;
 
-ChromeRenderViewHostTestHarness::ChromeRenderViewHostTestHarness()
-    : RenderViewHostTestHarness() {
+ChromeRenderViewHostTestHarness::ChromeRenderViewHostTestHarness() {
 }
 
 ChromeRenderViewHostTestHarness::~ChromeRenderViewHostTestHarness() {