Adding a bunch of trace events for text selection.

Source/web/WebLocalFrameImpl.cpp

Index: Source/web/WebLocalFrameImpl.cpp
diff --git a/Source/web/WebLocalFrameImpl.cpp b/Source/web/WebLocalFrameImpl.cpp
index 9b43442836a2bf363f899ff4e9c97859032cbe12..353042c88979dfc6bdd2a99b5ee3818efe6e34a5 100644
--- a/Source/web/WebLocalFrameImpl.cpp
+++ b/Source/web/WebLocalFrameImpl.cpp
@@ -1262,11 +1262,13 @@ WebString WebLocalFrameImpl::selectionAsMarkup() const
 
 void WebLocalFrameImpl::selectWordAroundPosition(LocalFrame* frame, VisiblePosition position)
 {
+    TRACE_EVENT0("blink", "WebLocalFrameImpl::selectWordAroundPosition");
     frame->selection().selectWordAroundPosition(position);
 }
 
 bool WebLocalFrameImpl::selectWordAroundCaret()
 {
+    TRACE_EVENT0("blink", "WebLocalFrameImpl::selectWordAroundCaret");
     FrameSelection& selection = frame()->selection();
     if (selection.isNone() || selection.isRange())
         return false;
@@ -1280,17 +1282,20 @@ void WebLocalFrameImpl::selectRange(const WebPoint& baseInViewport, const WebPoi
 
 void WebLocalFrameImpl::selectRange(const WebRange& webRange)
 {
+    TRACE_EVENT0("blink", "WebLocalFrameImpl::selectRange");
     if (RefPtrWillBeRawPtr<Range> range = static_cast<PassRefPtrWillBeRawPtr<Range>>(webRange))
         frame()->selection().setSelectedRange(range.get(), VP_DEFAULT_AFFINITY, FrameSelection::NonDirectional, NotUserTriggered);
 }
 
 void WebLocalFrameImpl::moveRangeSelectionExtent(const WebPoint& point)
 {
+    TRACE_EVENT0("blink", "WebLocalFrameImpl::moveRangeSelectionExtent");
     frame()->selection().moveRangeSelectionExtent(frame()->view()->viewportToContents(point));
 }
 
 void WebLocalFrameImpl::moveRangeSelection(const WebPoint& baseInViewport, const WebPoint& extentInViewport, WebFrame::TextGranularity granularity)
 {
+    TRACE_EVENT0("blink", "WebLocalFrameImpl::moveRangeSelection");
     blink::TextGranularity blinkGranularity = blink::CharacterGranularity;
     if (granularity == WebFrame::WordGranularity)
         blinkGranularity = blink::WordGranularity;
@@ -1302,6 +1307,7 @@ void WebLocalFrameImpl::moveRangeSelection(const WebPoint& baseInViewport, const
 
 void WebLocalFrameImpl::moveCaretSelection(const WebPoint& pointInViewport)
 {
+    TRACE_EVENT0("blink", "WebLocalFrameImpl::moveCaretSelection");
     Element* editable = frame()->selection().rootEditableElement();
     if (!editable)
         return;
@@ -1312,11 +1318,13 @@ void WebLocalFrameImpl::moveCaretSelection(const WebPoint& pointInViewport)
 
 bool WebLocalFrameImpl::setEditableSelectionOffsets(int start, int end)
 {
+    TRACE_EVENT0("blink", "WebLocalFrameImpl::setEditableSelectionOffsets");
     return frame()->inputMethodController().setEditableSelectionOffsets(PlainTextRange(start, end));
 }
 
 bool WebLocalFrameImpl::setCompositionFromExistingText(int compositionStart, int compositionEnd, const WebVector<WebCompositionUnderline>& underlines)
 {
+    TRACE_EVENT0("blink", "WebLocalFrameImpl::setCompositionFromExistingText");
     if (!frame()->editor().canEdit())
         return false;
 
@@ -1333,6 +1341,7 @@ bool WebLocalFrameImpl::setCompositionFromExistingText(int compositionStart, int
 
 void WebLocalFrameImpl::extendSelectionAndDelete(int before, int after)
 {
+    TRACE_EVENT0("blink", "WebLocalFrameImpl::extendSelectionAndDelete");
     if (WebPlugin* plugin = focusedPluginIfInputMethodSupported()) {
         plugin->extendSelectionAndDelete(before, after);
         return;