Support POST in browser navaigation.

content/public/browser/page_navigator.cc

Index: content/public/browser/page_navigator.cc
===================================================================
--- content/public/browser/page_navigator.cc	(revision 215313)
+++ content/public/browser/page_navigator.cc	(working copy)
@@ -4,6 +4,8 @@
 
 #include "content/public/browser/page_navigator.h"
 
+#include "base/memory/ref_counted_memory.h"
+
 namespace content {
 
 OpenURLParams::OpenURLParams(
@@ -14,6 +16,7 @@
     bool is_renderer_initiated)
     : url(url),
       referrer(referrer),
+      uses_post(false),
       source_frame_id(-1),
       disposition(disposition),
       transition(transition),
@@ -31,6 +34,7 @@
     bool is_renderer_initiated)
     : url(url),
       referrer(referrer),
+      uses_post(false),
       source_frame_id(source_frame_id),
       disposition(disposition),
       transition(transition),
@@ -40,7 +44,8 @@
 }
 
 OpenURLParams::OpenURLParams()
-    : source_frame_id(-1),
+    : uses_post(false),
+      source_frame_id(-1),
       disposition(UNKNOWN),
       transition(PageTransitionFromInt(0)),
       is_renderer_initiated(false),