Remove unused paintScrollbarThumb impl.

content/shell/renderer/test_runner/mock_web_theme_engine_mac.mm

Index: content/shell/renderer/test_runner/mock_web_theme_engine_mac.mm
diff --git a/content/shell/renderer/test_runner/mock_web_theme_engine_mac.mm b/content/shell/renderer/test_runner/mock_web_theme_engine_mac.mm
deleted file mode 100644
index 8838a17e1cecd82722bcea33274480c7faa04dd4..0000000000000000000000000000000000000000
--- a/content/shell/renderer/test_runner/mock_web_theme_engine_mac.mm
+++ /dev/null
@@ -1,170 +0,0 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "content/shell/renderer/test_runner/mock_web_theme_engine_mac.h"
-
-#import <AppKit/NSAffineTransform.h>
-#import <AppKit/NSGraphicsContext.h>
-#import <AppKit/NSScroller.h>
-#import <AppKit/NSWindow.h>
-#include <Carbon/Carbon.h>
-#include "skia/ext/skia_utils_mac.h"
-#include "third_party/WebKit/public/platform/WebCanvas.h"
-#include "third_party/WebKit/public/platform/WebRect.h"
-
-using blink::WebCanvas;
-using blink::WebRect;
-using blink::WebThemeEngine;
-
-// We can't directly tell the NSScroller to draw itself as active or inactive,
-// instead we have to make it a child of an (in)active window. This class lets
-// us fake that parent window.
-@interface FakeActiveWindow : NSWindow {
-@private
-    BOOL hasActiveControls;
-}
-+ (NSWindow*)alwaysActiveWindow;
-+ (NSWindow*)alwaysInactiveWindow;
-- (id)initWithActiveControls:(BOOL)_hasActiveControls;
-- (BOOL)_hasActiveControls;
-@end
-
-@implementation FakeActiveWindow
-
-static NSWindow* alwaysActiveWindow = nil;
-static NSWindow* alwaysInactiveWindow = nil;
-
-+ (NSWindow*)alwaysActiveWindow {
-    if (alwaysActiveWindow == nil)
-        alwaysActiveWindow = [[self alloc] initWithActiveControls:YES];
-    return alwaysActiveWindow;
-}
-
-+ (NSWindow*)alwaysInactiveWindow {
-    if (alwaysInactiveWindow == nil)
-        alwaysInactiveWindow = [[self alloc] initWithActiveControls:NO];
-    return alwaysInactiveWindow;
-}
-
-- (id)initWithActiveControls:(BOOL)_hasActiveControls {
-    if ((self = [super initWithContentRect:NSMakeRect(0, 0, 100, 100)
-                                 styleMask:0
-                                   backing:NSBackingStoreBuffered
-                                     defer:YES])) {
-        hasActiveControls = _hasActiveControls;
-    }
-    return self;
-}
-
-- (BOOL)_hasActiveControls
-{
-    return hasActiveControls;
-}
-
-@end
-
-namespace content {
-
-namespace {
-
-ThemeTrackEnableState stateToHIEnableState(WebThemeEngine::State state) {
-  switch (state) {
-    case WebThemeEngine::StateDisabled:
-      return kThemeTrackDisabled;
-    case WebThemeEngine::StateInactive:
-      return kThemeTrackInactive;
-    default:
-      return kThemeTrackActive;
-  }
-}
-
-}  // namespace
-
-void MockWebThemeEngineMac::paintScrollbarThumb(
-    WebCanvas* canvas,
-    WebThemeEngine::State state,
-    WebThemeEngine::Size size,
-    const WebRect& rect,
-    const WebThemeEngine::ScrollbarInfo& scrollbarInfo) {
-    // To match the Mac port, we still use HITheme for inner scrollbars.
-    if (scrollbarInfo.parent == WebThemeEngine::ScrollbarParentRenderLayer)
-        paintHIThemeScrollbarThumb(canvas, state, size, rect, scrollbarInfo);
-    else
-        paintNSScrollerScrollbarThumb(canvas, state, size, rect, scrollbarInfo);
-}
-
-// Duplicated from webkit/glue/webthemeengine_impl_mac.cc in the downstream
-// Chromium WebThemeEngine implementation.
-void MockWebThemeEngineMac::paintHIThemeScrollbarThumb(
-    WebCanvas* canvas,
-    WebThemeEngine::State state,
-    WebThemeEngine::Size size,
-    const WebRect& rect,
-    const WebThemeEngine::ScrollbarInfo& scrollbarInfo) {
-    HIThemeTrackDrawInfo trackInfo;
-    trackInfo.version = 0;
-    trackInfo.kind = size == WebThemeEngine::SizeRegular ? kThemeMediumScrollBar : kThemeSmallScrollBar;
-    trackInfo.bounds = CGRectMake(rect.x, rect.y, rect.width, rect.height);
-    trackInfo.min = 0;
-    trackInfo.max = scrollbarInfo.maxValue;
-    trackInfo.value = scrollbarInfo.currentValue;
-    trackInfo.trackInfo.scrollbar.viewsize = scrollbarInfo.visibleSize;
-    trackInfo.attributes = 0;
-    if (scrollbarInfo.orientation == WebThemeEngine::ScrollbarOrientationHorizontal)
-        trackInfo.attributes |= kThemeTrackHorizontal;
-
-    trackInfo.enableState = stateToHIEnableState(state);
-
-    trackInfo.trackInfo.scrollbar.pressState =
-        state == WebThemeEngine::StatePressed ? kThemeThumbPressed : 0;
-    trackInfo.attributes |= (kThemeTrackShowThumb | kThemeTrackHideTrack);
-    gfx::SkiaBitLocker bitLocker(canvas);
-    CGContextRef cgContext = bitLocker.cgContext();
-    HIThemeDrawTrack(&trackInfo, 0, cgContext, kHIThemeOrientationNormal);
-}
-
-void MockWebThemeEngineMac::paintNSScrollerScrollbarThumb(
-    WebCanvas* canvas,
-    WebThemeEngine::State state,
-    WebThemeEngine::Size size,
-    const WebRect& rect,
-    const WebThemeEngine::ScrollbarInfo& scrollbarInfo) {
-    [NSGraphicsContext saveGraphicsState];
-    NSScroller* scroller = [[NSScroller alloc] initWithFrame:NSMakeRect(rect.x, rect.y, rect.width, rect.height)];
-    [scroller setEnabled:state != WebThemeEngine::StateDisabled];
-    if (state == WebThemeEngine::StateInactive)
-        [[[FakeActiveWindow alwaysInactiveWindow] contentView] addSubview:scroller];
-    else
-        [[[FakeActiveWindow alwaysActiveWindow] contentView] addSubview:scroller];
-
-    [scroller setControlSize:size == WebThemeEngine::SizeRegular ? NSRegularControlSize : NSSmallControlSize];
-
-    double value = double(scrollbarInfo.currentValue) / double(scrollbarInfo.maxValue);
-    [scroller setDoubleValue: value];
-
-    float knobProportion = float(scrollbarInfo.visibleSize) / float(scrollbarInfo.totalSize);
-    [scroller setKnobProportion: knobProportion];
-
-    gfx::SkiaBitLocker bitLocker(canvas);
-    CGContextRef cgContext = bitLocker.cgContext();
-    NSGraphicsContext* nsGraphicsContext = [NSGraphicsContext graphicsContextWithGraphicsPort:cgContext flipped:YES];
-    [NSGraphicsContext setCurrentContext:nsGraphicsContext];
-
-    // Despite passing in frameRect() to the scroller, it always draws at (0, 0).
-    // Force it to draw in the right location by translating the whole graphics
-    // context.
-    CGContextSaveGState(cgContext);
-    NSAffineTransform *transform = [NSAffineTransform transform];
-    [transform translateXBy:rect.x yBy:rect.y];
-    [transform concat];
-
-    [scroller drawKnob];
-    CGContextRestoreGState(cgContext);
-
-    [scroller release];
-
-    [NSGraphicsContext restoreGraphicsState];
-}
-
-}  // namespace content