Revert 243777 "Moves CandidateWindow model to ui/base/ime."

Most CrOS failing similar to this:

FAILED: c++ -MMD -MF obj/chrome/browser/chromeos/input_method/test_support_common.mock_input_method_engine.o.d -DV8_DEPRECATION_WARNINGS -D_FILE_OFFSET_BITS=64 -DCHROMIUM_BUILD -DTOOLKIT_VIEWS=1 -DUI_COMPOSITOR_IMAGE_TRANSPORT -DUSE_AURA=1 -DUSE_ASH=1 -DUSE_CAIRO=1 -DUSE_GLIB=1 -DUSE_DEFAULT_RENDER_THEME=1 -DUSE_NSS=1 -DUSE_X11=1 -DOS_CHROMEOS=1 -DUSE_XI2_MT=2 -DFILE_MANAGER_EXTENSION=1 -DIMAGE_LOADER_EXTENSION=1 -DENABLE_REMOTING=1 -DENABLE_WEBRTC=1 -DUSE_PROPRIETARY_CODECS -DENABLE_PEPPER_CDMS -DENABLE_CONFIGURATION_POLICY -DENABLE_INPUT_SPEECH -DENABLE_NOTIFICATIONS -DENABLE_HIDPI=1 -DUSE_UDEV -DICU_UTIL_DATA_IMPL=ICU_UTIL_DATA_STATIC -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_BACKGROUND=1 -DENABLE_AUTOMATION=1 -DENABLE_GOOGLE_NOW=1 -DCLD_VERSION=2 -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 -DGL_GLEXT_PROTOTYPES -DLIBPEERCONNECTION_LIB=1 -DUSE_BRLAPI -DGTEST_HAS_POSIX_RE=0 -DNACL_WINDOWS=0 -DNACL_LINUX=1 -DNACL_OSX=0 -DNACL_TARGET_SUBARCH=64 -DNACL_TARGET_ARCH=x86 -DNACL_BUILD_SUBARCH=64 -DNACL_BUILD_ARCH=x86 -DPROTOBUF_USE_DLLS -DGOOGLE_PROTOBUF_NO_RTTI -DGOOGLE_PROTOBUF_NO_STATIC_INITIALIZER -DU_USING_ICU_NAMESPACE=0 -DU_STATIC_IMPLEMENTATION -DCHROME_PNG_WRITE_SUPPORT -DPNG_USER_CONFIG -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 -DSK_SUPPORT_LEGACY_COLORTYPE=1 -DGR_GL_IGNORE_ES3_MSAA=0 -DSK_SUPPORT_LEGACY_SK64 -DSK_SUPPORT_LEGACY_ONLOCKPIXELS -DSK_USE_POSIX_THREADS -DSK_DEFERRED_CANVAS_USES_FACTORIES=1 -DFEATURE_ENABLE_SSL -DFEATURE_ENABLE_VOICEMAIL -DEXPAT_RELATIVE_PATH -DGTEST_RELATIVE_PATH -DJSONCPP_RELATIVE_PATH -DNO_MAIN_THREAD_WRAPPING -DNO_SOUND_SYSTEM -DLINUX -DPOSIX -DCHROMEOS -DUNIT_TEST -DGTEST_HAS_RTTI=0 -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -DNDEBUG -DNVALGRIND -DDYNAMIC_ANNOTATIONS_ENABLED=0 -D_FORTIFY_SOURCE=2 -I../.. -I../../skia/config -I../../third_party/khronos -I../../gpu -I../../third_party/WebKit/Source -Igen -Igen/chrome -Igen/protoc_out -I../../third_party/protobuf -I../../third_party/protobuf/src -I../../third_party/WebKit -I../../third_party/icu/source/common -I../../third_party/npapi -I../../third_party/npapi/bindings -I../../v8/include -I../../third_party/libpng -I../../third_party/libwebp -I../../third_party/ots/include -I../../third_party/qcms/src -I../../third_party/iccjpeg -I../../third_party/libjpeg -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/libjingle/overrides -I../../third_party/libjingle/source -I../../testing/gtest/include -I../../third_party -I../../third_party/webrtc -I../../third_party/jsoncpp/overrides/include -I../../third_party/jsoncpp/source/include -I../../third_party/cacheinvalidation/overrides -I../../third_party/cacheinvalidation/src -I../../testing/gmock/include -I../../third_party/zlib -I../../third_party/leveldatabase/src/include -I../../third_party/leveldatabase/src -I../../third_party/leveldatabase -Igen/policy -I../../net/third_party/nss/ssl -Werror -pthread -fno-exceptions -fno-strict-aliasing -Wall -Wno-unused-parameter -Wno-missing-field-initializers -fvisibility=hidden -pipe -fPIC -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 -O2 -fno-ident -fdata-sections -ffunction-sections -fno-rtti -fno-threadsafe-statics -fvisibility-inlines-hidden -Wsign-compare  -c ../../chrome/browser/chromeos/input_method/mock_input_method_engine.cc -o obj/chrome/browser/chromeos/input_method/test_support_common.mock_input_method_engine.o
../../chrome/browser/chromeos/input_method/mock_input_method_engine.cc:14:43: fatalerror: chromeos/ime/candidate_window.h: No such file or directory
compilation terminated.
ninja: build stopped: subcommand failed.

> Moves CandidateWindow model to ui/base/ime.
> 
> BUG=325813
> R=komatsu@chromium.org
> TEST=build passes
> 
> Review URL: https://codereview.chromium.org/126363002

TBR=mukai@chromium.org

Review URL: https://codereview.chromium.org/130833002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243784 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 243784