Adding Navigation Throttles to DevTools

content/browser/devtools/render_frame_devtools_agent_host.cc

Index: content/browser/devtools/render_frame_devtools_agent_host.cc
diff --git a/content/browser/devtools/render_frame_devtools_agent_host.cc b/content/browser/devtools/render_frame_devtools_agent_host.cc
index 6646dcdbf47c312cb9b59f53c6a4341c49b66388..e4f987e93a055dd461bc90b75a06ba9dbffbf0be 100644
--- a/content/browser/devtools/render_frame_devtools_agent_host.cc
+++ b/content/browser/devtools/render_frame_devtools_agent_host.cc
@@ -13,6 +13,7 @@
 #include "content/browser/child_process_security_policy_impl.h"
 #include "content/browser/devtools/devtools_frame_trace_recorder.h"
 #include "content/browser/devtools/devtools_protocol_handler.h"
+#include "content/browser/devtools/page_navigation_throttle.h"
 #include "content/browser/devtools/protocol/browser_handler.h"
 #include "content/browser/devtools/protocol/dom_handler.h"
 #include "content/browser/devtools/protocol/emulation_handler.h"
@@ -345,6 +346,19 @@ void RenderFrameDevToolsAgentHost::OnBeforeNavigation(
     agent_host->AboutToNavigate(navigation_handle);
 }
 
+// static
+std::unique_ptr<NavigationThrottle>
+RenderFrameDevToolsAgentHost::GetThrottleForNavigation(
+    NavigationHandle* navigation_handle) {
+  RenderFrameDevToolsAgentHost* agent_host =
+      FindAgentHost(navigation_handle->GetWebContents());
+  if (agent_host) {
+    return agent_host->page_handler_->GetThrottleForNavigation(

[dgozman, 2016/07/08 19:20:00]

Not that page_handler_ may be null for subframes DTAH.

[alex clarke (OOO till 29th), 2016/07/08 20:55:37]

Done.

+        navigation_handle);
+  }
+  return nullptr;
+}
+
 RenderFrameDevToolsAgentHost::RenderFrameDevToolsAgentHost(
     RenderFrameHostImpl* host)
     : browser_handler_(new devtools::browser::BrowserHandler()),