Revert of Set FrameView/OuterViewportContainer size to visible size at minimum scale. (https://codereview.chromium.org/240863003/)

Reason for revert:
PinchViewportTest.* in webkit_unit_tests on Android (dbg) started failing after this patch.

Log: http://build.chromium.org/p/chromium.webkit/builders/Android%20Tests%20%28dbg%29/builds/18924

Snippet from log:
C   81s Main  ../../third_party/WebKit/Source/web/tests/PinchViewportTest.cpp:349: Failure
C   81s Main  Value of: (pinchViewport.visibleRect().location()).y()
C   81s Main    Actual: 0
C   81s Main  Expected: (FloatPoint(200, 200)).y()
C   81s Main  Which is: 200

Original issue's description:
> Set FrameView/OuterViewportContainer size to visible size at minimum scale.
> 
> To prevent the inner viewport from becoming larger than the outer viewport
> we set the outer viewport's size to be the visible rect at the minimum page
> scale.
> 
> BUG=364103
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=173147

TBR=bokan
NOTREECHECKS=true
NOTRY=true
BUG=364103

Review URL: https://codereview.chromium.org/262883003

git-svn-id: svn://svn.chromium.org/blink/trunk@173175 bbb929c8-8fbe-4397-9dbb-9b2b20218538