Prepare to move core/platform/text into blink_platform.dll

Prepare to move core/platform/text into blink_platform.dll

This CL moves NotImplemented, Logging, Language, and DateComponents into
blink_platform.dll because core/platform/text depends on this code. After this
CL lands, we'll be ready to move the bulk of core/platform/text into
blink_platform.dll.

In order to move this code into the DLL, I had to change how blink_common.dll
works a bit. Instead of being defined in web.gyp, I've moved the definition to
blink_platform.gyp to avoid a circular GYP dependency (because web.gyp depends
on blink_platform.gyp). This change makes sense because blink_common.dll is
really a tiny sliver of blink_platform.dll that's needed in the browser process
on Windows. To maintain sanity, I've also moved the source files for
blink_common.dll into Source/platform.

BUG=297477
R=jamesr

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=158518

[eseidel, 2013-09-30 05:04:15]

lgtm

[commit-bot: I haz the power, 2013-09-30 05:45:04]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/abarth@chromium.org/25195003/4001

[commit-bot: I haz the power, 2013-09-30 07:16:48]

Change committed as 158518