Undisable tests that were crashy because of re-initializing WebKit:

chrome/renderer/render_view_browsertest.cc

Index: chrome/renderer/render_view_browsertest.cc
diff --git a/chrome/renderer/render_view_browsertest.cc b/chrome/renderer/render_view_browsertest.cc
index 2aca8337a096797821f346dfc854cfb02151070a..8c9d9c6290b01f72c98835aac6b84293001b0f1d 100644
--- a/chrome/renderer/render_view_browsertest.cc
+++ b/chrome/renderer/render_view_browsertest.cc
@@ -494,8 +494,7 @@ TEST_F(RenderViewTest, OnPrintPageAsBitmap) {
 
 // Test that we can receive correct DOM events when we send input events
 // through the RenderWidget::OnHandleInputEvent() function.
-// Crashy, http://crbug.com/52643.
-TEST_F(RenderViewTest, DISABLED_OnHandleKeyboardEvent) {
+TEST_F(RenderViewTest, OnHandleKeyboardEvent) {
   // TODO(phajdan.jr): enable on Window when sprintf is removed.
 #if defined(OS_LINUX)
   // Load an HTML page consisting of one <input> element and three