Android: fixes for JNI with javap for java7.

The output of javap from java7 has changed, most notably:
public boolean add(java.lang.Object);
 Signature: (Ljava/lang/Object;)Z
became:
public boolean add(E);
  Signature: (Ljava/lang/Object;)Z

Rather than relying on parsing the parameters, use the signature field directly.

BUG=
TEST=base/android/jni_generator_tests.py

Review URL: https://codereview.chromium.org/40523002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@231031 0039d316-1c4b-4281-b951-d872f2087c98
Removed some unneeded debug logging from the Telemetry GPU tests.

BUG=
R=kbr@chromium.org

Review URL: https://codereview.chromium.org/27694006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@231032 0039d316-1c4b-4281-b951-d872f2087c98
Extract URLBlacklistPolicyHandler into its own file.

NOTE: the unit tests are all brand-new.

BUG=271392

Review URL: https://codereview.chromium.org/44283002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@231033 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 231033