Replace forward class declarations of VisibleSelection to include directive

This patch replaces forward class declarations |VisibleSelection| to include
directive of "VisibleSelection.h" as preparation of introducing
|VisibleSelectionTemplate<Strategy>|, like |PositionAlgorithm<Strategy>|.

This patch is a preparation of making selection to handle granularity for web
component, http://crrev.com/1277863002

BUG=513568
TEST=n/a; No behavior changes

Review URL: https://codereview.chromium.org/1314843003

git-svn-id: svn://svn.chromium.org/blink/trunk@201215 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/core/editing/DOMSelection.h

@@ -33,6 +33,7 @@
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/editing/Position.h"
+#include "core/editing/VisibleSelection.h"
 #include "core/frame/DOMWindowProperty.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
@@ -45,7 +46,6 @@ class ExceptionState;
 class Node;
 class Range;
 class TreeScope;
-class VisibleSelection;
 
 class DOMSelection final : public RefCountedWillBeGarbageCollected<DOMSelection>, public ScriptWrappable, public DOMWindowProperty {
     DEFINE_WRAPPERTYPEINFO();

third_party/WebKit/Source/core/editing/EditingStyle.h

@@ -35,6 +35,7 @@
 #include "core/CSSPropertyNames.h"
 #include "core/CSSValueKeywords.h"
 #include "core/editing/Position.h"
+#include "core/editing/VisibleSelection.h"
 #include "core/editing/WritingDirection.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
@@ -57,7 +58,6 @@ class Node;
 class QualifiedName;
 class ComputedStyle;
 class StylePropertySet;
-class VisibleSelection;
 
 class EditingStyle final : public RefCountedWillBeGarbageCollectedFinalized<EditingStyle> {
 public:

third_party/WebKit/Source/core/editing/EditingUtilities.h

@@ -31,6 +31,7 @@
 #include "core/editing/Position.h"
 #include "core/editing/PositionWithAffinity.h"
 #include "core/editing/VisiblePosition.h"
+#include "core/editing/VisibleSelection.h"
 #include "platform/text/TextDirection.h"
 #include "wtf/Forward.h"
 #include "wtf/text/CharacterNames.h"
@@ -52,7 +53,6 @@ class HTMLSpanElement;
 class HTMLUListElement;
 class Node;
 class Range;
-class VisibleSelection;
 
 // This file contains a set of helper functions used by the editing commands
 

third_party/WebKit/Source/core/editing/SelectionController.h

@@ -29,6 +29,7 @@
 
 #include "core/CoreExport.h"
 #include "core/editing/TextGranularity.h"
+#include "core/editing/VisibleSelection.h"
 #include "core/page/EventWithHitTestResults.h"
 #include "platform/heap/Handle.h"
 
@@ -37,7 +38,6 @@ namespace blink {
 class FrameSelection;
 class HitTestResult;
 class LocalFrame;
-class VisibleSelection;
 
 class SelectionController final : public NoBaseWillBeGarbageCollected<SelectionController> {
     WTF_MAKE_NONCOPYABLE(SelectionController);

third_party/WebKit/Source/core/editing/commands/TextInsertionBaseCommand.h

@@ -26,13 +26,13 @@
 #ifndef TextInsertionBaseCommand_h
 #define TextInsertionBaseCommand_h
 
+#include "core/editing/VisibleSelection.h"
 #include "core/editing/commands/CompositeEditCommand.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class Document;
-class VisibleSelection;
 
 class TextInsertionBaseCommand : public CompositeEditCommand {
 public: