Pass the user_gesture context in the IPC message FrameMsg_CommitNavigation to the renderer.

content/common/frame_messages.h

Index: content/common/frame_messages.h
diff --git a/content/common/frame_messages.h b/content/common/frame_messages.h
index b9520d9ae87df077d5cedaa5df0eb4ec34f66509..bb17bffd88e03b57287c90aeeaf133df8ca7a563 100644
--- a/content/common/frame_messages.h
+++ b/content/common/frame_messages.h
@@ -896,11 +896,12 @@ IPC_MESSAGE_ROUTED2(FrameMsg_SelectPopupMenuItems,
 // Tells the renderer that a navigation is ready to commit.  The renderer should
 // request |stream_url| to get access to the stream containing the body of the
 // response.
-IPC_MESSAGE_ROUTED4(FrameMsg_CommitNavigation,
+IPC_MESSAGE_ROUTED5(FrameMsg_CommitNavigation,
                     content::ResourceResponseHead,    /* response */
                     GURL,                             /* stream_url */
                     content::CommonNavigationParams,  /* common_params */
-                    content::RequestNavigationParams) /* request_params */
+                    content::RequestNavigationParams, /* request_params */

[jam, 2016/09/29 19:51:38]

per the comment in
https://cs.chromium.org/chromium/src/content/common/navigation_params.h?rcl=0...
(specifically, "Parameters only used by the current architecture should go in
StartNavigationParams.", i think this boolean should move from
StartNavigationParams to RequestNavigationParams

[ananta, 2016/09/29 21:28:43]

This parameter is not used by non PlzNavigate at the moment. In any case I
declared a has_user_gesture field in the RequestNavigationParams structure
Additionally StartNavigationParams is not passed back in
FrameMsg_CommitNavigation

[jam, 2016/09/29 21:38:27]

StartNavigationParams is what's used for non-plznavigate and it has an (android
only) has_user_gesture ?

+                    bool)                             /* user_gesture */
 
 // PlzNavigate
 // Tells the renderer that a navigation failed with the error code |error_code|