Add a description for fast_path test.

BUG=321439

Review URL: https://codereview.chromium.org/104503010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241453 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241453
Implemented download metrics for the component updater.

BUG=304354

Review URL: https://codereview.chromium.org/110293003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241454 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241454
[Android] Notify TabObservers about URL and page title changes.

BUG=318769

Review URL: https://codereview.chromium.org/110793003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241455 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241455
Add mojom_jinja_generator and jinja templates for the C++ bindings.

I believe it's feature compatible with the cpp generator. We still use the old
cpp generator currently. I plan on switching in a future CL for simplicity.

BUG=329008

Review URL: https://codereview.chromium.org/116793003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241456 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241456