Media Galleries API Metadata: Make Blob native extension bindings available to multiple extensions.

Feedback_private currently has a extension native handler for getting a Blob's UUID. Media Galleries API Metadata and other extensions that take a Blob will also want this.

This simply moves the function from a Feedback_private specific custom binding to a general ObjectBackedNativeHandler called BlobNativeHandler. This follows the CssNativeHandler example.

The parent class changed from ChromeV8Extension to ObjectBackedNativeHandler because ChromeV8Extension class has been deprecated.

R=thestig@chromium.org

BUG=318450

Review URL: https://codereview.chromium.org/76703002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236847 0039d316-1c4b-4281-b951-d872f2087c98
Skip slow webgl conformance tests before rolling it from 1.0.1 to 1.0.2

BUG=322689
TEST=gpu waterfall
R=bajones@chromium.org
TBR=kbr@chromium.org

Review URL: https://codereview.chromium.org/83483009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236848 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236848
Ignore TouchCancel ack dispositions

TouchCancel ack dispositions have no bearing on touch or gesture input
behavior.  As such, ignore the disposition, eliminating unnecessary blocking
of touch event dispatch.

BUG=302849,302852

Review URL: https://codereview.chromium.org/78263003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236849 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236849