Update to Chromium revision cb947c01 (#352221)

- Implement CefRequestHandler::OnBeforeBrowse using NavigationThrottle
  instead of ResourceThrottle (see http://crbug.com/537634). The CefRequest
  object passed to OnBeforeBrowse will no longer have an associated request
  identifier.
- Mac: Remove additional helper apps which are no longer required (see
  http://crbug.com/520680)
- Remove the UR_FLAG_REPORT_RAW_HEADERS flag which is no longer supported (see
  http://crbug.com/517114)
- Remove the CefBrowserSettings.java parameter. Java is an NPAPI plugin and
  NPAPI plugins are no longer supported (see http://crbug.com/470301#c11)
- Add CefFormatUrlForSecurityDisplay function in cef_parser.h
- Fix crash when passing `--disable-extensions` command-line flag (issue #1721)
- Linux: Fix NSS handler loading (issue #1727)

libcef/browser/text_input_client_osr_mac.h

@@ -21,19 +21,6 @@
 // mac when window rendering is disabled.
 
 @interface CefTextInputClientOSRMac : NSObject<NSTextInputClient> {
-
- @public
-  // The range of current marked text inside the whole content of the DOM node
-  // being edited.
-  NSRange markedRange_;
-
-  // The current composition character range and its bounds.
-  gfx::Range composition_range_;
-  std::vector<gfx::Rect> composition_bounds_;
-
-  // The current caret bounds.
-  gfx::Rect caret_rect_;
-
  @private
   // Represents the input-method attributes supported by this object.
   base::scoped_nsobject<NSArray> validAttributesForMarkedText_;