Revert 229569 "Enable general CSS filters in the software compos..."

This change broke WebContentsViewAuraTest.OverscrollScreenshot on Vista Tests (1), see http://build.chromium.org/p/chromium.win/builders/Vista%20Tests%20%281%29/builds/41306:

Backtrace:
	S32A_Opaque_BlitRow32_SSE2 [0x014F2E90+160]
	Sprite_D32_S32::blitRect [0x014C2CE1+81]
	SkScan::FillIRect [0x01484750+320]
	SkScan::FillIRect [0x01484830+64]
	SkDraw::drawSprite [0x0144E36A+314]
	SkBitmapDevice::drawSprite [0x014262AB+27]
	SkCanvas::drawSprite [0x014295DF+639]
	cc::SoftwareRenderer::DrawRenderPassQuad [0x015C0E11+705]
	cc::SoftwareRenderer::DoDrawQuad [0x015C13DB+715]


> Enable general CSS filters in the software compositor
> 
> The software compositor has only supported filters that include a
> reference filter. This CL enables support for filters that don't
> include a reference filter.
> 
> BUG=160302
> 
> Review URL: https://codereview.chromium.org/24090003

TBR=ajuma@chromium.org

Review URL: https://codereview.chromium.org/30653002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229593 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 229593
MetricsService: Send a hash of the UMA log in a header. 

Add a new X-Chrome-UMA-Log-SHA1 header that is transmitted 
along with each UMA log upload. The header contains the SHA1 
(as hex) of the payload prior to compression. 

The hash is computed at the time that the log is closed, rather than 
just before being transmitted - to minimize the chance of hashing 
an already corrupted log. 

Does not store the hash with logs when they are persisted temporarily 
to local state for later upload, since log are already hashed when stored 
(and discarded on load if the hash does not match). The SHA1 hash is 
re-computed when logs are loaded from local state. 

BUG=308066

Review URL: https://codereview.chromium.org/26646003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229594 0039d316-1c4b-4281-b951-d872f2087c98
CrOS login refactoring: drop use_oauth, pending_requests.

Moved use_oauth to UserContext (still used after authentication) and removed all mentions of use_oauth before authentication since it was always true.

Now that ParallelAuthenticator is not using ClientLogin there're no pending requests afte OnLoginSuccess() callback is called.

BUG=260219
TBR=phajdan.jr

Review URL: https://codereview.chromium.org/26937004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229595 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 229595