Revert "Have PNaCl use debug pexe URL instead of stripped pexe w/ kEnableNaClDebug"

This reverts commit r254212.

Cannot allocate the 1GB sandbox on XP. Perhaps from attempting to load
two NaCl modules at one time...

TBR=jvoung@chromium.org
BUG=https://code.google.com/p/nativeclient/issues/detail?id=3765

Review URL: https://codereview.chromium.org/185053002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254260 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254260
sync: cleanup histograms

* Move non-obsolete histograms from internal file to public.

NOTRY=True
BUG=223859

Review URL: https://codereview.chromium.org/183763003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254261 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254261
Send ChromeViewMsg_SearchBoxFocusChanged IPC msg and ChromeViewMsg_SearchBoxSetInputInProgress IPC msg from SearchIPCRouter.

This CL,
- Removes OmniboxFocusState details from InstantController.
- Deletes InstantIPCSender and updates the InstantPage class.
- Adds a new function in OmniboxCurrentPageDelegate to notify the client (such as SearchTabHelper) about the omnibox focus state change event.
- Adds a new function in SearchIPCRouter to send a message to the underlying page about the focus change event.
- Adds unit tests.

BUG=272583
TEST=none

Review URL: https://codereview.chromium.org/159713009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254262 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254262