Disable implicit conversions of scoped_refptr to T* on CrOS.

Disable implicit conversions of scoped_refptr to T* on CrOS.

The implicit conversion has already been disabled for Linux builds for
some time now. https://codereview.chromium.org/510323002 explains the
rationale for proceeding incrementally.

BUG=110610
Committed: https://crrev.com/1e6ba5a2c981b0b0c82d40e45e712c02480f2d6c
Cr-Commit-Position: refs/heads/master@{#295234}

[dcheng, 2014-09-16 05:55:31]

dcheng@chromium.org changed reviewers:
+ willchan@chromium.org

[dcheng, 2014-09-16 05:55:31]

I think this just needs a rubberstamp. It is blocked on at least 3 other CLs
landing first:
https://codereview.chromium.org/576503002
https://codereview.chromium.org/569173006
https://codereview.chromium.org/578533002

And possibly more depending on what else gets committed in the next day or two.

[willchan no longer on Chromium, 2014-09-16 18:04:21]

lgtm

[dcheng, 2014-09-17 00:00:46]

The CQ bit was checked by dcheng@chromium.org

[commit-bot: I haz the power, 2014-09-17 00:02:05]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/572713003/1

[commit-bot: I haz the power, 2014-09-17 01:53:22]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-09-17 01:53:23]

Try jobs failed on following builders:
  linux_chromium_chromeos_rel_swarming on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[dcheng, 2014-09-17 03:53:08]

The CQ bit was checked by dcheng@chromium.org

[commit-bot: I haz the power, 2014-09-17 03:53:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/572713003/1

[commit-bot: I haz the power, 2014-09-17 05:35:29]

Committed patchset #1 (id:1) as 7847037d73763b1b92f1231ffe8f8b610f67a0cb

[commit-bot: I haz the power, 2014-09-17 05:36:16]

Patchset 1 (id:??) landed as
https://crrev.com/1e6ba5a2c981b0b0c82d40e45e712c02480f2d6c
Cr-Commit-Position: refs/heads/master@{#295234}

[horo, 2014-09-17 07:18:50]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/580743002/ by horo@chromium.org.

The reason for reverting is: Broke "compile" on
http://build.chromium.org/p/chromium.chrome/builders/Google%20Chrome%20Chrome...

FAILED: /b/build/goma/gomacc
../../third_party/llvm-build/Release+Asserts/bin/clang++ -MMD -MF
obj/chrome/browser/chromeos/login/session/browser_chromeos.user_session_manager.o.d
-DV8_DEPRECATION_WARNINGS -D_FILE_OFFSET_BITS=64 -DGOOGLE_CHROME_BUILD
-DCR_CLANG_REVISION=214024 -DENABLE_RLZ -DTOOLKIT_VIEWS=1
-DUI_COMPOSITOR_IMAGE_TRANSPORT -DUSE_AURA=1 -DUSE_ASH=1 -DUSE_PANGO=1
-DUSE_CAIRO=1 -DUSE_GLIB=1 -DUSE_DEFAULT_RENDER_THEME=1 -DUSE_X11=1
-DUSE_XI2_MT=2 -DIMAGE_LOADER_EXTENSION=1 -DENABLE_REMOTING=1 -DENABLE_WEBRTC=1
-DUSE_PROPRIETARY_CODECS -DENABLE_PEPPER_CDMS -DENABLE_CONFIGURATION_POLICY
-DENABLE_NOTIFICATIONS -DENABLE_HIDPI=1 -DUSE_UDEV -DENABLE_EGLIMAGE=1
-DENABLE_TASK_MANAGER=1 -DENABLE_EXTENSIONS=1 -DENABLE_PLUGINS=1
-DENABLE_SESSION_SERVICE=1 -DENABLE_THEMES=1 -DENABLE_AUTOFILL_DIALOG=1
-DENABLE_PROD_WALLET_SERVICE=1 -DENABLE_BACKGROUND=1 -DENABLE_GOOGLE_NOW=1
-DCLD_VERSION=2 -DCLD2_DATA_SOURCE=static -DENABLE_FULL_PRINTING=1
-DENABLE_PRINTING=1 -DENABLE_SPELLCHECK=1 -DENABLE_CAPTIVE_PORTAL_DETECTION=1
-DENABLE_APP_LIST=1 -DENABLE_MANAGED_USERS=1 -DENABLE_MDNS=1
-DENABLE_SERVICE_DISCOVERY=1 -DENABLE_LOAD_COMPLETION_HACKS=1 -DNACL_WINDOWS=0
-DNACL_LINUX=1 -DNACL_OSX=0 -DNACL_ANDROID=0 -DNACL_TARGET_SUBARCH=64
-DNACL_TARGET_ARCH=x86 -DNACL_BUILD_SUBARCH=64 -DNACL_BUILD_ARCH=x86
-DGL_GLEXT_PROTOTYPES -DMOJO_USE_SYSTEM_IMPL -DLIBPEERCONNECTION_LIB=1
-DUSE_BRLAPI -DSK_ENABLE_INST_COUNT=0 -DSK_SUPPORT_GPU=1
'-DGR_GL_CUSTOM_SETUP_HEADER="GrGLConfig_chrome.h"'
-DSK_ENABLE_LEGACY_API_ALIASING=1 -DSK_ATTR_DEPRECATED=SK_NOTHING_ARG1
-DGR_GL_IGNORE_ES3_MSAA=0 -DSK_WILL_NEVER_DRAW_PERSPECTIVE_TEXT
-DSK_SUPPORT_LEGACY_PUBLIC_IMAGEINFO_FIELDS
-DSK_IGNORE_PROPER_FRACTIONAL_SCALING -DSK_SUPPORT_LEGACY_PICTURE_CLONE
-DSK_IGNORE_ETC1_SUPPORT -DSK_IGNORE_GPU_DITHER
-DSK_SUPPORT_LEGACY_IMAGECACHE_NAME -DSK_LEGACY_PICTURE_SIZE_API
-DSK_LEGACY_PICTURE_DRAW_API -DSK_USE_POSIX_THREADS
-DSK_DEFERRED_CANVAS_USES_FACTORIES=1 -DHUNSPELL_STATIC -DHUNSPELL_CHROME_CLIENT
-DUSE_HUNSPELL -DU_USING_ICU_NAMESPACE=0 -DU_ENABLE_DYLOAD=0
-DU_STATIC_IMPLEMENTATION -DFEATURE_ENABLE_SSL -DFEATURE_ENABLE_VOICEMAIL
-DEXPAT_RELATIVE_PATH -DGTEST_RELATIVE_PATH -DNO_MAIN_THREAD_WRAPPING
-DNO_SOUND_SYSTEM -DLINUX -DWEBRTC_LINUX -DPOSIX -DWEBRTC_POSIX -DCHROMEOS
-DLIBXML_STATIC -DPROTOBUF_USE_DLLS -DGOOGLE_PROTOBUF_NO_RTTI
-DGOOGLE_PROTOBUF_NO_STATIC_INITIALIZER -DUSE_NSS=1 -DOS_CHROMEOS=1
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -DNDEBUG -DOFFICIAL_BUILD
-DNVALGRIND -DDYNAMIC_ANNOTATIONS_ENABLED=0 -D_FORTIFY_SOURCE=2 -Igen
-I../../breakpad/src -Iobj/chrome/browser_chromeos.gen
-Iobj/chrome/browser_chromeos.gen/chrome -I../.. -I../../skia/config
-I../../third_party/khronos -I../../gpu -I../../third_party/WebKit/Source
-Igen/angle -Igen/protoc_out -Igen/chrome -Igen/policy -Igen/components/strings
-Igen/content/app/resources/ -I../../third_party/WebKit
-I../../net/third_party/nss/ssl -I../../third_party/skia/src/core
-I../../third_party/skia/include/core -I../../third_party/skia/include/effects
-I../../third_party/skia/include/pdf -I../../third_party/skia/include/gpu
-I../../third_party/skia/include/lazy -I../../third_party/skia/include/pathops
-I../../third_party/skia/include/pipe -I../../third_party/skia/include/ports
-I../../third_party/skia/include/utils -I../../skia/ext
-I../../third_party/cacheinvalidation/overrides
-I../../third_party/cacheinvalidation/src
-I../../third_party/cacheinvalidation/google/cacheinvalidation
-I../../third_party/icu/source/i18n -I../../third_party/icu/source/common
-I../../third_party/leveldatabase/src/include
-I../../third_party/leveldatabase/src -I../../third_party/leveldatabase
-I../../third_party/webrtc/overrides -I../../third_party/libjingle/overrides
-I../../third_party/libjingle/source -I../../testing/gtest/include
-I../../third_party -I../../third_party/libusb/src/libusb
-I../../third_party/libxml/linux/include -I../../third_party/libxml/src/include
-I../../third_party/npapi -I../../third_party/npapi/bindings
-I../../third_party/protobuf -I../../third_party/protobuf/src
-I../../third_party/re2 -I../../third_party/zlib -Igen/ui/chromeos/resources
-Igen/ui/chromeos/strings -Igen/ui/resources -I../../v8/include
-Igen/ash/resources -Igen/ash/strings -Igen/ui/gl
-I../../third_party/mesa/src/include -Werror -pthread -fno-strict-aliasing -Wall
-Wno-unused-parameter -Wno-missing-field-initializers -fvisibility=hidden -pipe
-fPIC -Wno-reserved-user-defined-literal -Xclang -load -Xclang
/b/build/slave/google-chrome-rel-chromeos/build/src/tools/clang/scripts/../../../third_party/llvm-build/Release+Asserts/lib/libFindBadConstructs.so
-Xclang -add-plugin -Xclang find-bad-constructs -fcolor-diagnostics -g
-B/b/build/slave/google-chrome-rel-chromeos/build/src/third_party/binutils/Linux_x64/Release/bin
-Wheader-hygiene -Wno-char-subscripts -Wno-unneeded-internal-declaration
-Wno-covered-switch-default -Wstring-conversion -Wno-c++11-narrowing
-Wno-deprecated-register -Wexit-time-destructors -pthread
-I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include
-I/usr/include/dbus-1.0 -I/usr/lib/x86_64-linux-gnu/dbus-1.0/include
-I/usr/include/nss -I/usr/include/nspr -Wno-header-guard -m64 -march=x86-64 -O2
-fno-ident -fdata-sections -ffunction-sections -fno-slp-vectorize
-fno-unwind-tables -fno-asynchronous-unwind-tables -fno-exceptions -fno-rtti
-fno-threadsafe-statics -fvisibility-inlines-hidden -Wsign-compare -std=gnu++11 
-c ../../chrome/browser/chromeos/login/session/user_session_manager.cc -o
obj/chrome/browser/chromeos/login/session/browser_chromeos.user_session_manager.o
../../chrome/browser/chromeos/login/session/user_session_manager.cc:321:3:
error: no matching function for call to 'PostTaskAndReplyWithResult'
  base::PostTaskAndReplyWithResult(
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../base/task_runner_util.h:55:6: note: candidate function [with
TaskReturnType = bool, ReplyArgType = bool] not viable: no known conversion from
'const scoped_refptr<base::TaskRunner>' to 'base::TaskRunner *' for 1st argument
bool PostTaskAndReplyWithResult(
     ^
1 error generated.
ninja: build stopped: subcommand failed.
.