Revert 137538 - Nacl sdk Nacl sdk automated test(method-testNaClSDK) of new installation process of…

Revert 137538 - Nacl sdk Nacl sdk automated test(method-testNaClSDK) of new installation process of NaCl sdk.

+++ REVERT NOTICE +++
Reverting because this test is failing on all QA bots.
http://master.chrome.corp.google.com:8012/builders/Chrome%20Linux64%20Ubuntu%20QA/builds/4028/steps/pyauto_functional_tests/logs/stdio
http://master.chrome.corp.google.com:8012/builders/Chrome%20Mac%2010_7%20QA/builds/1189/steps/pyauto_functional_tests/logs/stdio
+++               +++

-Changed list of files being checked for NaCl sdk installer.
-Changed Download and unziping of nacl_sdk folder on all the platforms(Used Zipfile module).
-Changed installation of NaCl SDK.
-Removed Hello world examples from test case.
-Added new examples like Input Events, Dynamic Library(Magic * ball), Load progress, Multi-threaded input events, Web socket
Code Cleanup:
-Removed unused methods and pre-defined global variables.
-Removed pre-release gallery test.test(method-testNaClSDK) of new installation process of NaCl sdk.

NOTRY=true

Review URL: https://chromiumcodereview.appspot.com/10310047

TBR=pnihalani@chromium.org
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=137640