Merge: Propagate the search request params from the browser to the Instant search base page to fix …

Merge: Propagate the search request params from the browser to the Instant search base page to fix the embedded search request logging issues.

- Adds an attribute in EmbeddedSearch SearchBox API  to pass the embedded search request params (such as omnibox query suggestion stats, original query, etc) to the Instant search base page at the query submission time.

Server side bug: b/17555463
Server side CL:  cl/76305813

BUG=421258
TEST=none
TBR=samarth@chromium.org,tedchoc@chromium.org,jschuh@chromium.org,sky@chromium.org

Review URL: https://codereview.chromium.org/609493002

Cr-Commit-Position: refs/heads/master@{#304544}
(cherry picked from commit 562c49c8edf16a40ef3f76fb6a57d7ac17331216)

Committed: https://chromium.googlesource.com/chromium/src/+/5b56b600bad7dd00380004d9412a452c82a73500

[kmadhusu, 2014-11-19 01:40:09]

kmadhusu@chromium.org changed reviewers:
+ jschuh@chromium.org, samarth@chromium.org, tedchoc@chromium.org

[kmadhusu, 2014-11-19 01:40:45]

kmadhusu@chromium.org changed reviewers:
+ sky@chromium.org

[kmadhusu, 2014-11-19 01:41:02]

TBR'ing OWNERS.

[kmadhusu, 2014-11-19 01:45:58]

Committed patchset #1 (id:1) manually as
5b56b600bad7dd00380004d9412a452c82a73500 (presubmit successful).