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 d37d9c0232401fd6ae7a728ee6542dec391c6215..ded44b0e6d4c2bd0cf94a3aacf3cbd8bbe14973f 100644
--- a/chrome/test/base/chrome_render_view_host_test_harness.cc
+++ b/chrome/test/base/chrome_render_view_host_test_harness.cc
@@ -20,8 +20,7 @@
 using content::RenderViewHostTester;
 using content::RenderViewHostTestHarness;
 
-ChromeRenderViewHostTestHarness::ChromeRenderViewHostTestHarness()
-    : RenderViewHostTestHarness() {
+ChromeRenderViewHostTestHarness::ChromeRenderViewHostTestHarness() {
 }
 
 ChromeRenderViewHostTestHarness::~ChromeRenderViewHostTestHarness() {