Removing reinterpret_cast<std::vector<...> > in RenderWidgetHostViewAura::SetCompositionText().

Removing reinterpret_cast<std::vector<...> > in RenderWidgetHostViewAura::SetCompositionText().

RenderWidgetHostViewAura::SetCompositionText() used reinterpret_cast<> to convert

std::vector<ui::CompositionText>  ==>  std::vector<blink::WebCompositionUnderline>

This requires ui::CompositionText (in Chrome) and blink::WebCompositionUnderline
(in Blink) to be identical.  This is problematic when we want to change
blink::WebCompositionUnderline and blink::WebCompositionUnderline
(and WebCore::CompositionUnderline), since Chrome & Blink CLs have to be separate.

This CL implements manual copy to allow CL decoupling.

BUG=135900
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=275103

[huangs, 2014-06-04 18:13:13]

OWNER review to rjkroege@.  This is a prerequesite cleanup for IME bug fix.

[rjkroege, 2014-06-04 18:37:55]

lgtm

[huangs, 2014-06-04 18:41:03]

The CQ bit was checked by huangs@chromium.org

[commit-bot: I haz the power, 2014-06-04 18:42:44]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/huangs@chromium.org/319553002/1

[commit-bot: I haz the power, 2014-06-04 22:50:20]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  android_chromium_gn_compile_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_chromium_gn_c...)
  linux_chromium_gn_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_gn_rel...)

[commit-bot: I haz the power, 2014-06-04 22:59:00]

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

[commit-bot: I haz the power, 2014-06-04 22:59:01]

Try jobs failed on following builders:
  android_chromium_gn_compile_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_chromium_gn_c...)

[huangs, 2014-06-05 05:42:16]

The CQ bit was checked by huangs@chromium.org

[commit-bot: I haz the power, 2014-06-05 05:44:11]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/huangs@chromium.org/319553002/1

[commit-bot: I haz the power, 2014-06-05 05:52:23]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  android_chromium_gn_compile_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_chromium_gn_c...)

[commit-bot: I haz the power, 2014-06-05 05:57:29]

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

[commit-bot: I haz the power, 2014-06-05 05:57:29]

Try jobs failed on following builders:
  android_chromium_gn_compile_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_chromium_gn_c...)

[huangs, 2014-06-05 13:03:40]

The CQ bit was checked by huangs@chromium.org

[commit-bot: I haz the power, 2014-06-05 13:04:27]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/huangs@chromium.org/319553002/1

[commit-bot: I haz the power, 2014-06-05 14:38:12]

Change committed as 275103