mac: Remove explicit dependency from many test targets on webcore
mac: Remove explicit dependency from many test targets on webcore

This was added back when we were using a 32bit linker, as a manual hint
to ld. Now that webcore is split up and we use a 64bit linker, it's no longer
necessary.

It also breaks the component build, which relies on everything just depending
on libwebkit.dylib.

BUG=43791,90078
TEST=things still build
TBR=mark

Review URL: http://codereview.chromium.org/9700055

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@126913 0039d316-1c4b-4281-b951-d872f2087c98

ropik/chromium,adobe/chromium,adobe/chromium,adobe/chromium,gavinp/chromium,ropik/chromium,adobe/chromium,ropik/chromium,adobe/chromium,gavinp/chromium,yitian134/chromium,ropik/chromium,yitian134/chromium,gavinp/chromium,yitian134/chromium,adobe/chromium,ropik/chromium,gavinp/chromium,adobe/chromium,gavinp/chromium,gavinp/chromium,gavinp/chromium,ropik/chromium,yitian134/chromium,adobe/chromium,yitian134/chromium,yitian134/chromium,ropik/chromium,adobe/chromium,adobe/chromium,ropik/chromium,yitian134/chromium,gavinp/chromium,adobe/chromium,gavinp/chromium,yitian134/chromium,ropik/chromium,gavinp/chromium,yitian134/chromium,yitian134/chromium