Introduce abstractions to allow embedders to test RenderViewHost

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 fa216162060bd1f57bfd9c7ddd3b4e87c144013f..5eae53ceda0429c7dd676308038128ed060e6799 100644
--- a/chrome/test/base/chrome_render_view_host_test_harness.cc
+++ b/chrome/test/base/chrome_render_view_host_test_harness.cc
@@ -12,6 +12,8 @@
 #include "ui/aura/root_window.h"
 #endif
 
+using content::RenderViewHostTester;
+
 ChromeRenderViewHostTestHarness::ChromeRenderViewHostTestHarness()
     : RenderViewHostTestHarness() {
 }
@@ -23,6 +25,10 @@ TestingProfile* ChromeRenderViewHostTestHarness::profile() {
   return static_cast<TestingProfile*>(browser_context_.get());
 }
 
+RenderViewHostTester* ChromeRenderViewHostTestHarness::rvh_tester() {
+  return RenderViewHostTester::For(rvh());
+}
+
 void ChromeRenderViewHostTestHarness::SetUp() {
   if (!browser_context_.get())
     browser_context_.reset(new TestingProfile());