Paint Profiler: fix right boundary of selection window

Source/devtools/front_end/timeline/PaintProfilerView.js

Index: Source/devtools/front_end/timeline/PaintProfilerView.js
diff --git a/Source/devtools/front_end/timeline/PaintProfilerView.js b/Source/devtools/front_end/timeline/PaintProfilerView.js
index 57b4cbd2435d159ead84d6218d1ae4a1e12cd42e..fd48a129636723bb7e5259f5ef41b58d7b31fb9b 100644
--- a/Source/devtools/front_end/timeline/PaintProfilerView.js
+++ b/Source/devtools/front_end/timeline/PaintProfilerView.js
@@ -178,7 +178,7 @@ WebInspector.PaintProfilerView.prototype = {
         var window = this.windowBoundaries();
         var totalTime = 0;
         var timeByCategory = {};
-        for (var i = window.left; i <= window.right; ++i) {
+        for (var i = window.left; i < window.right; ++i) {
             var logEntry = this._log[i];
             var category = WebInspector.PaintProfilerView._categoryForLogItem(logEntry);
             timeByCategory[category.color] = timeByCategory[category.color] || 0;
@@ -213,10 +213,10 @@ WebInspector.PaintProfilerView.prototype = {
     {
         var screenLeft = this._selectionWindow.windowLeft * this._canvas.width;
         var screenRight = this._selectionWindow.windowRight * this._canvas.width;
-        var barLeft = Math.floor((screenLeft - this._barPaddingWidth) / this._outerBarWidth);
-        var barRight = Math.floor((screenRight - this._barPaddingWidth + this._innerBarWidth)/ this._outerBarWidth);
+        var barLeft = Math.floor(screenLeft / this._outerBarWidth);
+        var barRight = Math.floor((screenRight + this._innerBarWidth - this._barPaddingWidth / 2) / this._outerBarWidth);
         var stepLeft = Number.constrain(barLeft * this._samplesPerBar, 0, this._log.length - 1);
-        var stepRight = Number.constrain(barRight * this._samplesPerBar, 0, this._log.length - 1);
+        var stepRight = Number.constrain(barRight * this._samplesPerBar, 0, this._log.length);
 
         return { left: stepLeft, right: stepRight };
     },
@@ -228,7 +228,7 @@ WebInspector.PaintProfilerView.prototype = {
             return;
 
         var window = this.windowBoundaries();
-        this._snapshot.requestImage(this._log[window.left].commandIndex, this._log[window.right].commandIndex, 1, this._showImageCallback);
+        this._snapshot.requestImage(this._log[window.left].commandIndex, this._log[window.right - 1].commandIndex, 1, this._showImageCallback);
     },
 
     _reset: function()
@@ -291,8 +291,8 @@ WebInspector.PaintProfilerCommandLogView.prototype = {
         if (!this._log)
             return;
         stepLeft = stepLeft || 0;
-        stepRight = stepRight || this._log.length - 1;
-        for (var i = stepLeft; i <= stepRight; ++i)
+        stepRight = stepRight || this._log.length;
+        for (var i = stepLeft; i < stepRight; ++i)
             this._appendLogItem(this.sidebarTree, this._log[i]);
     },