Add Properties
* CACHE_MODEL
* COOKIE_ACCEPT_POLICY
* USER_AGENT
* JAVASCRIPT_ENABLED
* LOAD_IMAGE_AUTOMATICALLY
* DEFAULT_TEXT_ENCODING_NAME
* DEFAULT_FONT_SIZE
Add Signals
* PageLoadErrorSignal
Add Methods
* Suspend
* Resume
* ClearCookies
Modify Methods
* EvaluateJavaScript
Change-Id: Ic4c7c74e23f9d63ba5078224e2ad84d1e77e72de
Signed-off-by: Jiyun Yang <ji.yang@samsung.com>